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Designation: A182/A182M − 13a Endorsed by Manufacturers Standardization

Society of the Valve and Fittings Industry


Used in USDOE-NE Standards

Standard Specification for


Forged or Rolled Alloy and Stainless Steel Pipe Flanges,
Forged Fittings, and Valves and Parts for High-Temperature
Service1
This standard is issued under the fixed designation A182/A182M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.

1. Scope* 1.6 The values stated in either SI units or inch-pound units


1.1 This specification covers forged low alloy and stainless 2 are to be regarded separately as the standard. Within the text,
steel piping components for use in pressure systems. Included the SI units are shown in brackets. The values stated in each
are flanges, fittings, valves, and similar parts to specified system may not be exact equivalents; therefore, each system
dimensions or to dimensional standards, such as the ASME shall be used independently of the other. Combining values
specifications that are referenced in Section 2. from the two systems may result in non-conformance with the
standard.
1.2 For bars and products machined directly from bar (other
than those directly addressed by this specification; see 6.4), 2. Referenced Documents
refer to Specifications A479/A479M and A739 for the similar
2.1 In addition to the referenced documents listed in Speci-
grades available in those specifications. Products made to this
fication A961/A961M, the following list of standards apply to
specification are limited to a maximum weight of 10 000 lb
this specification.
[4540 kg]. For larger products and products for other
applications, refer to Specifications A336/A336M and A965/ 2.2 ASTM Standards:3
A965M for the similar ferritic and austenitic grades, A262 Practices for Detecting Susceptibility to Intergranular
respectively, available in those specifications. Attack in Austenitic Stainless Steels
A275/A275M Practice for Magnetic Particle Examination of
1.3 Several grades of low alloy steels and ferritic,
Steel Forgings
martensitic, austenitic, and ferritic-austenitic stainless steels
A336/A336M Specification for Alloy Steel Forgings for
are included in this specification. Selection will depend upon
Pressure and High-Temperature Parts
design and service requirements. Several of the ferritic/
A388/A388M Practice for Ultrasonic Examination of Steel
austenitic (duplex) grades are also found in Specification
Forgings
A1049/A1049M.
A479/A479M Specification for Stainless Steel Bars and
1.4 Supplementary requirements are provided for use when Shapes for Use in Boilers and Other Pressure Vessels
additional testing or inspection is desired. These shall apply A484/A484M Specification for General Requirements for
only when specified individually by the purchaser in the order. Stainless Steel Bars, Billets, and Forgings
1.5 This specification is expressed in both inch-pound units A739 Specification for Steel Bars, Alloy, Hot-Wrought, for
and in SI units. However, unless the order specifies the Elevated Temperature or Pressure-Containing Parts, or
applicable “M” specification designation (SI units), the mate- Both
rial shall be furnished to inch-pound units. A763 Practices for Detecting Susceptibility to Intergranular
Attack in Ferritic Stainless Steels
A788/A788M Specification for Steel Forgings, General Re-
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, quirements
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A961/A961M Specification for Common Requirements for
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting
Materials for Piping and Special Purpose Applications.
Current edition approved Oct. 1, 2013. Published October 2013. Originally
3
approved in 1935. Last previous edition approved in 2013 as A182/A182M–13. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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DOI: 10.1520/A0182_A0182M-13A. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Standards volume information, refer to the standard’s Document Summary page on
cation SA-182 in Section II of that Code. the ASTM website.

*A Summary of Changes section appears at the end of this standard


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A182/A182M − 13a
Steel Flanges, Forged Fittings, Valves, and Parts for 4.1.2 Requirement, if any, that manufacturer shall submit
Piping Applications drawings for approval showing the shape of the rough forging
A965/A965M Specification for Steel Forgings, Austenitic, before machining and the exact location of test specimen
for Pressure and High Temperature Parts material (see 9.3.1).
A1049/A1049M Specification for Stainless Steel Forgings,
Ferritic/Austenitic (Duplex), for Pressure Vessels and 5. General Requirements
Related Components 5.1 Product furnished to this specification shall conform to
E92 Test Method for Vickers Hardness of Metallic Materials the requirements of Specification A961/A961M, including any
(Withdrawn 2010)4 supplementary requirements that are indicated in the purchase
E112 Test Methods for Determining Average Grain Size order. Failure to comply with the general requirements of
E165 Practice for Liquid Penetrant Examination for General Specification A961/A961M constitutes nonconformance with
Industry this specification. In case of conflict between the requirements
E340 Test Method for Macroetching Metals and Alloys of this specification and Specification A961/A961M, this
2.3 ASME Standards:5 specification shall prevail.
B16.11 Forged Steel Fittings, Socket Welding, and Threaded
2.4 ASME Boiler and Pressure Vessel Code:5 6. Manufacture
Section IX 6.1 The low-alloy ferritic steels shall be made by the
2.5 AWS Specifications6 open-hearth, electric-furnace, or basic-oxygen process with the
A5.4/A5.4M Specification for Stainless Steel Electrodes for option of separate degassing and refining processes in each
Shielded Metal Arc Welding case.
A5.5/A5.5M Specification for Low-Alloy Steel Electrodes
6.2 The stainless steels shall be melted by one of the
for Shielded Metal Arc Welding
following processes: (a) electric-furnace (with the option of
A5.9/A5.9M Specification for Bare Stainless Steel Welding
separate degassing and refining processes); (b) vacuum-
Electrodes and Rods
furnace; or (c) one of the former followed by vacuum or
A5.11/A5.11M Specification for Nickel and Nickel-Alloy
electroslag-consumable remelting. Grade F XM-27Cb may be
Welding Electrodes for Shielded Metal Arc Welding
produced by electron-beam melting.
A5.14/A5.14M Specification for Nickel and Nickel-Alloy
Bare Welding Electrodes and Rods 6.3 A sufficient discard shall be made to secure freedom
A5.23/A5.23M Specification for Low-Alloy Steel Elec- from injurious piping and undue segregation.
trodes and Fluxes for Submerged Arc Welding 6.4 The material shall be forged as close as practicable to
A5.28/A5.28M Specification for Low-Alloy Steel Elec- the specified shape and size.
trodes for Gas Shielded Arc Welding 6.4.1 Flanges of any type, elbows, return bends, tees, and
A5.29/A5.29M Low-Alloy Steel Electrodes for Flux Cored header tees shall not be machined directly from bar stock.
Arc Welding 6.4.2 Cylindrically-shaped parts may be machined from
forged or rolled solution-annealed austenitic stainless steel bar
3. Terminology
without additional hot working.
3.1 Definitions—For definitions of terms used in this 6.4.3 Cylindrically-shaped low alloy, martensitic stainless,
specification, refer to Specification A961/A961M. and ferritic stainless steel parts, NPS-4 [DN 100] and under,
3.2 Definitions of Terms Specific to This Standard: may be machined from forged or rolled bar, without additional
3.2.1 hardened condition, n—for F23, the metallurgical hot working.
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condition achieved after normalizing and cooling to room 6.5 Except as provided for in 6.4, the finished product shall
temperature but prior to tempering. be a forging as defined in the Terminology section of Specifi-
cation A788/A788M.
4. Ordering Information
4.1 It is the purchaser’s responsibility to specify in the 7. Heat Treatment7
purchase order information necessary to purchase the needed 7.1 After hot working, forgings shall be cooled to a tem-
material. In addition to the ordering information guidelines in perature below 1000 °F [538 °C] prior to heat treating in
Specification A961/A961M, orders should include the follow- accordance with the requirements of Table 1.
ing information:
7.2 Low Alloy Steels and Ferritic and Martensitic Stainless
4.1.1 Additional requirements (see 7.2.1, Table 2 footnotes,
Steels—The low alloy steels and ferritic and martensitic
9.3, and 19.2), and
stainless steels shall be heat treated in accordance with the
4
The last approved version of this historical standard is referenced on
7
www.astm.org. A solution annealing temperature above 1950 °F [1065 °C] may impair the
5
Available from American Society of Mechanical Engineers (ASME), ASME resistance to intergranular corrosion after subsequent exposure to sensitizing
International Headquarters, Two Park Ave., New York, NY 10016-5990, http:// conditions in F 321, F 321H, F 347, F 347H, F 348, and F 348H. When specified
www.asme.org. by the purchaser, a lower temperature stabilization or resolution annealing shall be
6
Available from American Welding Society (AWS), 550 NW LeJeune Rd., used subsequent to the initial high temperature solution anneal (see Supplementary
Miami, FL 33126, http://www.aws.org. Requirement S10).

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A182/A182M − 13a
TABLE 1 Heat Treating Requirements
Grade Heat Treat Type Austenitizing/Solutioning Cooling Quenching Cool Tempering Temperature,
Temperature, Minimum Media Below °F [°C] Minimum or
or Range, °F [°C]A Range, °F [°C]
Low Alloy Steels
B B
F1 anneal 1650 [900] furnace cool
B
normalize and temper 1650 [900] air cool 1150 [620]
B B
F2 anneal 1650 [900] furnace cool
B
normalize and temper 1650 [900] air cool 1150 [620]
B B
F 5, F 5a anneal 1750 [955] furnace cool
B
normalize and temper 1750 [955] air cool 1250 [675]
B B
F9 anneal 1750 [955] furnace cool
B
normalize and temper 1750 [955] air cool 1250 [675]
B
F 10 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 91 normalize and temper 1900-1975 [1040-1080] air cool 1350–1470 [730–800]
B
F 92 normalize and temper 1900-1975 [1040-1080] air cool 1350–1470 [730–800]
B
F 122 normalize and temper 1900-1975 [1040-1080] air cool 1350–1470 [730–800]
B
F 911 normalize and temper 1900-1975 [1040-1080] air cool or liquid 1365–1435 [740-780]
B B
F 11, Class 1, 2, 3 anneal 1650 [900] furnace cool
B
normalize and temper 1650 [900] air cool 1150 [620]
B B
F 12, Class 1, 2 anneal 1650 [900] furnace cool
B
normalize and temper 1650 [900] air cool 1150 [620]
B B
F 21, F 3V, and F anneal 1750 [955] furnace cool
3VCb
B
normalize and temper 1750 [955] air cool 1250 [675]
B B
F 22, Class 1, 3 anneal 1650 [900] furnace cool
B
normalize and temper 1650 [900] air cool 1250 [675]
B
F 22V normalize and temper or 1650 [900] air cool or liquid 1250 [675]
quench and temper
B
F 23 normalize and temper 1900-1975 [1040-1080] air cool 1350–1470 [730–800]
accelerated cool
B
F 24 normalize and temper 1800-1975 [980-1080] air cool 1350–1470 [730–800]
or liquid
B B
FR anneal 1750 [955] furnace cool
B B
normalize 1750 [955] air cool
B
normalize and temper 1750 [955] air cool 1250 [675]
B
F 36, Class 1 normalize and temper 1650 [900] air cool 1100 [595]
B
F 36, Class 2 normalize and temper 1650 [900] air cool 1100 [595]
quench and temper 1650 [900] accelerated air cool 1100 [595]
or liquid
Martensitic Stainless Steels
B B
F 6a Class 1 anneal not specified furnace cool
normalize and temper not specified air cool 400 [205] 1325 [725]
B B
temper not required 1325 [725]
B B
F 6a Class 2 anneal not specified furnace cool
normalize and temper not specified air cool 400 [205] 1250 [675]
B B
temper not required 1250 [675]
B B
F 6a Class 3 anneal not specified furnace cool
normalize and temper not specified air cool 400 [205] 1100 [595]
B B
F 6a Class 4 anneal not specified furnace cool
normalize and temper not specified air cool 400 [205] 1000 [540]
B B
F 6b anneal 1750 [955] furnace cool
normalize and temper 1750 [955] air cool 400 [205] 1150 [620]
F 6NM normalize and temper 1850 [1010] air cool 200 [95] 1040-1120 [560-600]
Ferritic Stainless Steels
B B
F XM-27 Cb anneal 1850 [1010] furnace cool
B B
F 429 anneal 1850 [1010] furnace cool
B B
F 430 anneal not specified furnace cool
Austenitic Stainless Steels
B
F 304 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 304H solution treat and quench 1900 [1040] liquid 500 [260]
B
F 304L solution treat and quench 1900 [1040] liquid 500 [260]
B
F 304N solution treat and quench 1900 [1040] liquid 500 [260]
B
F 304LN solution treat and quench 1900 [1040] liquid 500 [260]
B
F 309H solution treat and quench 1900 [1040] liquid 500 [260]
B
F 310 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 310H solution treat and quench 1900 [1040] liquid 500 [260]
B
F 310MoLN solution treat and quench 1900–2010 [1050–1100] liquid 500 [260]
B
F 316 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 316H solution treat and quench 1900 [1040] liquid 500 [260]
B
F 316L solution treat and quench 1900 [1040] liquid 500 [260]
B
F 316N solution treat and quench 1900 [1040] liquid 500 [260]
B
F 316LN solution treat and quench 1900 [1040] liquid 500 [260]
B
F 316Ti solution treat and quench 1900 [1040] liquid 500 [260]
B
F 317 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 317L solution treat and quench 1900 [1040] liquid 500 [260]
B
S31727 solution treat and quench 1975–2155 [1080–1180] liquid 500 [260]

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A182/A182M − 13a
TABLE 1 Continued
Grade Heat Treat Type Austenitizing/Solutioning Cooling Quenching Cool Tempering Temperature,
Temperature, Minimum Media Below °F [°C] Minimum or
or Range, °F [°C]A Range, °F [°C]
B
S32053 solution treat and quench 1975–2155 [1080–1180] liquid 500 [260]
B
F 347 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 347H solution treat and quench 2000 [1095] liquid 500 [260]
B
F 347LN solution treat and quench 1900 [1040] liquid 500 [260]
B
F 348 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 348H solution treat and quench 2000 [1095] liquid 500 [260]
B
F 321 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 321H solution treat and quench 2000 [1095] liquid 500 [260]
B
F XM-11 solution treat and quench 1900 [1040] liquid 500 [260]
B
F XM-19 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 20 solution treat and quench 1700-1850 [925-1010] liquid 500 [260]
B
F 44 solution treat and quench 2100 [1150] liquid 500 [260]
B
F 45 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 46 solution treat and quench 2010-2140 [1100-1140] liquid 500 [260]
B
F 47 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 48 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 49 solution treat and quench 2050 [1120] liquid 500 [260]
B
F 56 solution treat and quench 2050-2160 [1120-1180] liquid 500 [260]
B
F 58 solution treat and quench 2085 [1140] liquid 500 [260]
B
F 62 solution treat and quench 2025 [1105] liquid 500 [260]
B
F 63 solution treat and quench 1900 [1040] liquid 500 [260]
B
F 64 solution treat and quench 2010-2140 [1100-1170] liquid 500 [250]
B
F 904L solution treat and quench 1920-2100 [1050-1150] liquid 500 [260]
Ferritic-Austenitic Stainless Steels
B
F 50 solution treat and quench 1925 [1050] liquid 500 [260]
B
F 51 solution treat and quench 1870 [1020] liquid 500 [260]
F 52C liquid 500 [260] B
B
F 53 solution treat and quench 1880 [1025] liquid 500 [260]
B
F 54 solution treat and quench 1920-2060 [1050-1125] liquid 500 [260]
B
F 55 solution treat and quench 2010-2085 [1100-1140] liquid 500 [260]
B
F 57 solution treat and quench 1940 [1060] liquid 175 [80]
B
F 59 solution treat and quench 1975-2050 [1080-1120] liquid 500 [260]
B
F 60 solution treat and quench 1870 [1020] liquid 500 [260]
B
F 61 solution treat and quench 1920-2060 [1050-1125] liquid 500 [260]
F 65 solution treat and quench 1830-2100 [1000-1150] liquidD 500 [260] B
B
F 66 solution treat and quench 1870–1975 [1020–1080] liquid 500 [260]
B
F 67 solution treat and quench 1870–2050 [1020–1120] liquid 500 [260]
B
F 68 solution treat and quench 1700–1920 [925–1050] liquid 500 [260]
A
Minimum unless temperature range is listed.
B
Not applicable.
C
Grade F 52 shall be solution treated at 1825 to 1875 °F [995 to 1025 °C] 30 min/in. of thickness and water quenched.
D
The cooling media for Grade F 65 shall be quenching in water or rapidly cooling by other means.

requirements of 7.1 and Table 1. When more than one heat 7.3 Austenitic and Ferritic-Austenitic Stainless Steels—The
treatment option is listed for a Grade in Table 1, any one of the austenitic and ferritic-austenitic stainless steels shall be heat
heat treatments listed shall be performed. The selection of the treated in accordance with the requirements of 7.1 and Table 1.
heat treatment shall be at the manufacturer’s option, unless 7.3.1 Alternatively, immediately following hot working,
otherwise stated in the purchase order. while the temperature of the forging is not less than the
7.2.1 Liquid Quenching—Except as permitted in 7.2.2, for minimum solution annealing temperature specified in Table 1,
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F 1, F 2, and F 3, and in 7.2.3, for F 91, and when agreed to by forgings made from austenitic grades (except grades F 304H, F
the purchaser, liquid quenching followed by tempering shall be 309H, F 310, F 310H, F 316H, F 321, F 321H, F 347, F 347H,
permitted provided the temperatures in Table 1 for each grade F 348, F 348H, F 45, and F 56) may be individually rapidly
are used. quenched in accordance with the requirements of Table 1.
7.2.1.1 Marking—Parts that are liquid quenched and tem- 7.3.2 See Supplementary Requirement S8 if a particular
pered shall be marked “QT.” heat treatment method is to be employed.
7.2.2 Alternatively, Grade F 1, F 2, and F 12, Classes 1 and
2 may be given a heat treatment of 1200 °F [650 °C] minimum 7.4 Time of Heat Treatment—Heat treatment of forgings
after final hot or cold forming. may be performed before machining.
7.2.3 Alternatively, Grade F 91 forged fittings having any 7.5 Forged or Rolled Bar—Forged or rolled austenitic
section thickness greater than 3 in. [75 mm], at the time of heat stainless bar from which cylindrically shaped parts are to be
treatment, shall be normalized and tempered or quenched and machined, as permitted by 6.4, and the parts machined from
tempered at the manufacturer’s option, provided that the such bar, without heat treatment after machining, shall be
temperatures in Table 1 for F 91 are used. furnished to the annealing requirements of Specification A479/

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A182/A182M − 13a
A479M or this specification, with subsequent light cold draw- to the distance from the area of significant stress to the nearest
ing and straightening permitted (see Supplementary Require- heat-treated surface and at least twice this distance (2 t) from
ment S3 if annealing must be the final operation). any second surface. However, the test depth shall not be nearer
to one treated surface than 3⁄4 in. [19 mm] and to the second
8. Chemical Composition treated surface than 11⁄2 in. [38 mm]. This method of test
8.1 A chemical heat analysis in accordance with Specifica- specimen location would normally apply to contour-forged
tion A961/A961M shall be made and conform to the chemical parts, or parts with thick cross-sectional areas where 1⁄4 T ×
composition prescribed in Table 2. T testing (see 9.3) is not practical. Sketches showing the exact
test locations shall be approved by the purchaser when this
8.2 Grades to which lead, selenium, or other elements are method is used.
added for the purpose of rendering the material free-machining
9.3.2 Metal Buffers—The required distances from heat-
shall not be used.
treated surfaces may be obtained with metal buffers instead of
8.3 Starting material produced to a specification that spe- integral extensions. Buffer material may be carbon or low-alloy
cifically requires the addition of any element beyond those steel, and shall be joined to the forging with a partial
listed in Table 2 for the applicable grade of material is not penetration weld that seals the buffered surface. Specimens
permitted. shall be located at 1⁄2-in. [13-mm] minimum from the buffered
8.4 Steel grades covered in this specification shall not surface of the forging. Buffers shall be removed and the welded
contain an unspecified element, other than nitrogen in stainless areas subjected to magnetic particle test to ensure freedom
steels, for the ordered grade to the extent that the steel from cracks unless the welded areas are completely removed
conforms to the requirements of another grade for which that by subsequent machining.
element is a specified element having a required minimum
9.4 For annealed low alloy steels, ferritic stainless steels,
content. For this requirement, a grade is defined as an alloy
and martensitic stainless steels, and also for austenitic and
described individually and identified by its own UNS designa-
ferritic-austenitic stainless steels, the test specimen may be
tion or Grade designation and identification symbol in Table 2.
taken from any convenient location.
8.5 Product Analysis—The purchaser may make a product
analysis on products supplied to this specification in accor- 9.5 Tension Tests:
dance with Specification A961/A961M. 9.5.1 Low Alloy Steels and Ferritic and Martensitic Stain-
less Steels—One tension test shall be made for each heat in
9. Mechanical Properties each heat treatment charge.
9.1 The material shall conform to the requirements as to 9.5.1.1 When the heat-treating cycles are the same and the
mechanical properties for the grade ordered as listed in Table 3. furnaces (either batch or continuous type) are controlled within

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625 °F [614 °C] and equipped with recording pyrometers so
9.2 Mechanical test specimens shall be obtained from pro- that complete records of heat treatment are available, then only
duction forgings, or from separately forged test blanks pre- one tension test from each heat of each forging type (see Note
pared from the stock used to make the finished product. In 1) and section size is required, instead of one test from each
either case, mechanical test specimens shall not be removed heat in each heat-treatment charge.
until after all heat treatment is complete. If repair welding is
required, test specimens shall not be removed until after NOTE 1—“Type” in this case is used to describe the forging shape such
post-weld heat treatment is complete, except for ferritic grades as a flange, ell, tee, and the like.
when the post-weld heat treatment is conducted at least 50 °F 9.5.2 Austenitic and Ferritic-Austenitic Stainless Steel
[30 °C] below the actual tempering temperature. When test Grades—One tension test shall be made for each heat.
blanks are used, they shall receive approximately the same 9.5.2.1 When heat treated in accordance with 7.1, the test
working as the finished product. The test blanks shall be heat blank or forging used to provide the test specimen shall be heat
treated with the finished product and shall approximate the treated with a finished forged product.
maximum cross section of the forgings they represent.
9.5.2.2 When the alternative method in 7.3.1 is used, the test
9.3 For normalized and tempered, or quenched and tem- blank or forging used to provide the test specimen shall be
pered forgings, the central axis of the test specimen shall be forged and quenched under the same processing conditions as
taken at least 1⁄4 T from the nearest surface as-heat-treated, the forgings they represent.
where T is the maximum heat-treated thickness of the repre- 9.5.3 Testing shall be performed as specified in Specifica-
sented forging. In addition, for quenched and tempered tion A961/A961M using the largest feasible of the round
forgings, the mid-length of the test specimen shall be at least T specimens.
from all other surfaces as-heat-treated, exclusive of the T
dimension surfaces. When the section thickness does not 9.6 Hardness Tests:
permit this positioning, the test specimen shall be positioned as 9.6.1 Except when only one forging is produced, a mini-
near as possible to the prescribed location, as agreed to by the mum of two pieces per batch or continuous run as defined in
purchaser and the supplier. 9.6.2 shall be hardness tested as specified in Specification
9.3.1 With prior purchase approval, the test specimen for A961/A961M to ensure that the forgings are within the
ferritic steel forgings may be taken at a depth (t) corresponding hardness limits given for each grade in Table 3. The purchaser

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A182/A182M − 13a
TABLE 2 Chemical RequirementsA
Identifi- UNS Grade Composition, %
cation Desig- Carbon Manga- Phos- Sulfur Silicon Nickel Chromium Molybde- Colum- Titan- Other
Symbol nation nese phorus num bium ium Elements
Low Alloy Steels
F1 K12822 carbon-molybdenum 0.28 0.60–0.90 0.045 0.045 0.15–0.35 ... ... 0.44–0.65 ... ... ...
F 2B K12122 0.5 % chromium, 0.05–0.21 0.30–0.80 0.040 0.040 0.10–0.60 ... 0.50–0.81 0.44–0.65 ... ... ...
0.5 % molybdenum
F 5C K41545 4 to 6 % chromium 0.15 0.30–0.60 0.030 0.030 0.50 0.50 4.0–6.0 0.44–0.65 ... ... ...
F 5aC K42544 4 to 6 % chromium 0.25 0.60 0.040 0.030 0.50 0.50 4.0–6.0 0.44–0.65 ... ... ...
F 9 K90941 9 % chromium 0.15 0.30–0.60 0.030 0.030 0.50–1.00 ... 8.0–10.0 0.90–1.10 ... ... ...
F 10 S33100 20 nickel, 8 chromium 0.10–0.20 0.50–0.80 0.040 0.030 1.00–1.40 19.0–22.0 7.0–9.0 ... ... ... ...
F 91 K90901 9 % chromium, 1 % 0.08–0.12 0.30–0.60 0.020 0.010 0.20–0.50 0.40 8.0–9.5 0.85–1.05 0.06–0.10 ... N 0.03–0.07
molybdenum, 0.2 % Al 0.02D
vanadium plus V 0.18–0.25
columbium and Ti 0.01D
Zr 0.01D
nitrogen
F 92 K92460 9 % chromium, 1.8 % 0.07–0.13 0.30–0.60 0.020 0.010 0.50 0.40 8.50–9.50 0.30–0.60 0.04–0.09 ... V 0.15–0.25
tungsten, 0.2 % N
vanadium plus 0.030–0.070
columbium Al 0.02D
W 1.50–2.00
B
0.001–0.006
Ti 0.01D
Zr 0.01D
F 122 K91271 11 % chromium, 2 % 0.07–0.14 0.70 0.020 0.010 0.50 0.50 10.00–11.50 0.25–0.60 0.04– ... V 0.15–0.30
tungsten, 0.2 % 0.10 B 0.005
vanadium, plus N 0.040–0.100
molybdenum, Al 0.02D
columbium, copper, Cu 0.30–1.70
nickel, nitrogen, and W 1.50–2.50
Ti 0.01D
boron Zr 0.01D
F 911 K91061 9 % chromium, 1 % 0.09–0.13 0.30–0.60 0.020 0.010 0.10–0.50 0.40 8.5–9.5 0.90–1.10 0.060–0.10 ... W 0.90–1.10
molybdenum, 0.2 % Al 0.02D
vanadium plus N 0.04–0.09
columbium and V 0.18–0.25
B 0.0003–
nitrogen 0.006
Ti 0.01D
Zr 0.01D
F 11 K11597 1.25 % chromium, 0.05–0.15 0.30–0.60 0.030 0.030 0.50–1.00 ... 1.00–1.50 0.44–0.65 ... ... ...
Class 1 0.5 % molybdenum
F 11 K11572 1.25 % chromium, 0.10–0.20 0.30–0.80 0.040 0.040 0.50–1.00 ... 1.00–1.50 0.44–0.65 ... ... ...
Class 2 0.5 % molybdenum
F 11 K11572 1.25 % chromium, 0.10–0.20 0.30–0.80 0.040 0.040 0.50–1.00 ... 1.00–1.50 0.44–0.65 ... ... ...
Class 3 0.5 % molybdenum
F 12 K11562 1 % chromium, 0.05–0.15 0.30–0.60 0.045 0.045 0.50 max ... 0.80–1.25 0.44–0.65 ... ... ...
Class 1 0.5 % molybdenum
F 12 K11564 1 % chromium, 0.10–0.20 0.30–0.80 0.040 0.040 0.10–0.60 ... 0.80–1.25 0.44–0.65 ... ... ...
Class 2 0.5 % molybdenum
F 21 K31545 chromium-molybdenum 0.05–0.15 0.30–0.60 0.040 0.040 0.50 max ... 2.7–3.3 0.80–1.06 ... ... ...
F 3V K31830 3 % chromium, 1 % 0.05–0.18 0.30–0.60 0.020 0.020 0.10 ... 2.8–3.2 0.90–1.10 ... 0.015– V 0.20–0.30
--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---

molybdenum, 0.25 % 0.035 B


vanadium plus boron 0.001–0.003
and titanium
F 3VCb K31390 3 % chromium, 1 % 0.10–0.15 0.30–0.60 0.020 0.010 0.10 0.25 2.7–3.3 0.90–1.10 0.015–0.070
0.015 V 0.20–0.30
molybdenum, 0.25 % Cu 0.25
vanadium plus boron, Ca 0.0005–
columbium, and 0.0150
titanium
F 22 K21590 chromium-molybdenum 0.05–0.15 0.30–0.60 0.040 0.040 0.50 ... 2.00–2.50 0.87–1.13 ... ... ...
Class 1 ...
F 22 K21590 chromium-molybdenum 0.05–0.15 0.30–0.60 0.040 0.040 0.50 ... 2.00–2.50 0.87–1.13 ... ... ...
Class 3
F 22V K31835 2.25 % chromium, 1 % 0.11–0.15 0.30–0.60 0.015 0.010 0.10 0.25 2.00–2.50 0.90–1.10 0.07 0.030 Cu 0.20
molybdenum, 0.25 % V 0.25–0.35
vanadium B 0.002
Ca 0.015E
F 23 K41650 2.25 % chromium, 0.04–0.10 0.10–0.60 0.030 0.010 0.50 0.40 1.90-2.60 0.05-0.30 0.02– 0.005– V 0.20–0.30
1.6 % tungsten, 0.25 % 0.08 0.060F B 0.0010–
vanadium, plus 0.006
molybdenum, N 0.015F
columbium, and boron Al 0.030
W 1.45–1.75

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A182/A182M − 13a
TABLE 2 Continued
Identifi- UNS Grade Composition, %
cation Desig- Carbon Manga- Phos- Sulfur Silicon Nickel Chromium Molybde- Colum- Titan- Other
Symbol nation nese phorus num bium ium Elements
F 24 K30736 2.25 % chromium, 1 % 0.05–0.10 0.30–0.70 0.020 0.010 0.15–0.45 ... 2.20–2.60 0.90–1.10 ... 0.06-0.10 V 0.20–0.30
molybdenum, 0.25 % N 0.12
vanadium plus titanium Al 0.020
and boron B 0.0015–
0.0070
FR K22035 2 % nickel, 1 % copper 0.20 0.40–1.06 0.045 0.050 ... 1.60–2.24 ... ... ... ... Cu 0.75–1.25
F 36 K21001 1.15 % nickel, 0.10–0.17 0.80–1.20 0.030 0.025 0.25–0.50 1.00–1.30 0.30 0.25–0.50 0.015–0.045 N 0.020
0.65 % copper, Al 0.050
molybdenum, Cu 0.50–0.80
and columbium V 0.02
Martensitic Stainless Steels
F 6a S41000 13 % chromium 0.15 1.00 0.040 0.030 1.00 0.50 11.5–13.5 ... ... ... ...
410G
F 6b S41026 13 % chromium, 0.15 1.00 0.020 0.020 1.00 1.00–2.00 11.5–13.5 0.40–0.60 ... ... Cu 0.50
--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---

0.5 % molybdenum
F 6NM S41500 13 % chromium, 4 % 0.05 0.50–1.00 0.030 0.030 0.60 3.5–5.5 11.5–14.0 0.50–1.00 ... ... ...
nickel
Ferritic Stainless Steels
F XM- S44627 27 chromium, 1 0.010H 0.40 0.020 0.020 0.40 0.50H 25.0–27.5 0.75–1.50 0.05–0.20 ... N 0.015H
27Cb molybdenum Cu 0.20H
XM-27G
F 429 S42900 15 chromium 0.12 1.00 0.040 0.030 0.75 0.50 14.0–16.0 ... ... ... ...
429G
F 430 S43000 17 chromium 0.12 1.00 0.040 0.030 0.75 0.50 16.0–18.0 ... ... ... ...
430G
Austenitic Stainless Steels
F 304 S30400 18 chromium, 8 nickel 0.08 2.00 0.045 0.030 1.00 8.0–11.0 18.0–20.0 ... ... ... N 0.10
304G
F 304H S30409 18 chromium, 8 nickel 0.04–0.10 2.00 0.045 0.030 1.00 8.0–11.0 18.0–20.0 ... ... ... ...
304HG
F 304L S30403 18 chromium, 8 nickel, 0.030 2.00 0.045 0.030 1.00 8.0–13.0 18.0–20.0 ... ... ... N 0.10
low carbon
304LG
F 304N S30451 18 chromium, 8 nickel, 0.08 2.00 0.045 0.030 1.00 8.0–10.5 18.0–20.0 ... ... ... N 0.10–0.16
modified with nitrogen
304NG
F 304LN S30453 18 chromium, 8 nickel, 0.030 2.00 0.045 0.030 1.00 8.0–10.5 18.0–20.0 ... ... ... N 0.10–0.16
modified with nitrogen
304LNG
F 309H S30909 23 chromium, 13.5 0.04–0.10 2.00 0.045 0.030 1.00 12.0–15.0 22.0–24.0 ... ... ... ...
nickel
309HG
F 310 S31000 25 chromium, 20 nickel 0.25 2.00 0.045 0.030 1.00 19.0–22.0 24.0–26.0 ... ... ... ...
310G
F 310H S31009 25 chromium, 20 nickel 0.04–0.10 2.00 0.045 0.030 1.00 19.0–22.0 24.0–26.0 ... ... ... ...
310HG
F S31050 25 chromium, 22 0.030 2.00 0.030 0.015 0.40 21.0–23.0 24.0–26.0 2.00–3.00 ... ... N 0.10–0.16
310MoLN nickel,
modified with
molybdenum and
nitrogen, low carbon
310MoLNG
F 316 S31600 18 chromium, 8 nickel, 0.08 2.00 0.045 0.030 1.00 10.0–14.0 16.0–18.0 2.00–3.00 ... ... N 0.10
modified with
molybdenum
316G
F 316H S31609 18 chromium, 8 nickel, 0.04–0.10 2.00 0.045 0.030 1.00 10.0–14.0 16.0–18.0 2.00–3.00 ... ... ...
modified with
molybdenum
316HG
F 316L S31603 18 chromium, 8 nickel, 0.030 2.00 0.045 0.030 1.00 10.0–15.0 16.0–18.0 2.00–3.00 ... ... N 0.10
modified with
molybdenum, low
carbon
316LG
F 316N S31651 18 chromium, 8 nickel, 0.08 2.00 0.045 0.030 1.00 11.0–14.0 16.0–18.0 2.00–3.00 ... ... N 0.10–0.16
modified with
molybdenum and
nitrogen
316NG

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A182/A182M − 13a
TABLE 2 Continued
Identifi- UNS Grade Composition, %
cation Desig- Carbon Manga- Phos- Sulfur Silicon Nickel Chromium Molybde- Colum- Titan- Other
Symbol nation nese phorus num bium ium Elements
F 316LN S31653 18 chromium, 8 nickel, 0.030 2.00 0.045 0.030 1.00 11.0–14.0 16.0–18.0 2.00–3.00 ... ... N 0.10–0.16
modified with
molybdenum and
nitrogen
316LNG
I
F 316Ti S31635 18 chromium, 8 nickel, 0.08 2.00 0.045 0.030 1.00 10.0–14.0 16.0–18.0 2.00–3.00 ... N 0.10 max
modified with
molybdenum and
nitrogen
316TiG
F 317 S31700 19 chromium, 13 0.08 2.00 0.045 0.030 1.00 11.0–15.0 18.0–20.0 3.0–4.0 ... ... ...
nickel, 3.5 molybdenum
G
317
F 317L S31703 19 chromium, 13 0.030 2.00 0.045 0.030 1.00 11.0–15.0 18.0–20.0 3.0–4.0 ... ... ...
nickel, 3.5 molybdenum
317LG
S31727 S31727 18 chromium, 15 0.030 1.00 0.030 0.030 1.00 14.5–16.5 17.5–19.0 3.8–4.5 ... ... Cu 2.8–4.0
nickel, 4.5 N 0.15–0.21
molybdenum,
3.5 copper with
nitrogen
S32053 S32053 23 chromium, 25 0.030 1.00 0.030 0.010 1.00 24.0–28.0 22.0–24.0 5.0–6.0 ... ... N 0.17–0.22
nickel, 5.5
molybdenum, with
nitrogen
J
F 321 S32100 18 chromium, 8 nickel 0.08 2.00 0.045 0.030 1.00 9.0–12.0 17.0–19.0 ... ... ...
modified with titanium
G
321
K
F 321H S32109 18 chromium, 8 nickel, 0.04–0.10 2.00 0.045 0.030 1.00 9.0–12.0 17.0–19.0 ... ... ...
modified with titanium
321HG
L
F 347 S34700 18 chromium, 8 nickel 0.08 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 ... ... ...
modified with
columbium
347G
--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---

M
F 347H S34709 18 chromium, 8 nickel, 0.04–0.10 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 ... ... ...
modified with
columbium
347HG
F347LN S34751 18 chromium, 8 nickel 0.005–0.020 2.00 0.045 0.030 1.00 9.0–13.0 17.0–19.0 ... 0.20–0.50N ... N 0.06–0.10
modified with
columbium and
nitrogen
347LN
L
F 348 S34800 18 chromium, 8 nickel 0.08 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 ... ... Co 0.20
modified with Ta 0.10
columbium
348G
M
F 348H S34809 18 chromium, 8 nickel, 0.04–0.10 2.00 0.045 0.030 1.00 9.0–13.0 17.0–20.0 ... ... Co 0.20
modified with Ta 0.10
columbium
348HG
F XM-11 S21904 20 chromium, 6 nickel, 0.040 8.0–10.0 0.060 0.030 1.00 5.5–7.5 19.0–21.5 ... ... ... N 0.15–0.40
9 manganese
XM-11G
F XM-19 S20910 22 chromium, 13 0.06 4.0–6.0 0.040 0.030 1.00 11.5–13.5 20.5–23.5 1.50–3.00 0.10– ... N 0.20–0.40
nickel, 5 manganese 0.30 V 0.10–0.30
G
XM-19
F 20 N08020 35 nickel, 20 .07 2.00 0.045 0.035 1.00 32.0–38.0 19.0–21.0 2.00–3.00 8xCmin ... Cu 3.0–4.0
chromium, 3.5 copper, –1.00
2.5 molybdenum
F 44 S31254 20 chromium, 18 0.020 1.00 0.030 0.010 0.80 17.5–18.5 19.5–20.5 6.0–6.5 ... ... Cu 0.50–1.00
nickel, 6 molybdenum, N 0.18–0.25
low carbon
F 45 S30815 21 chromium, 11 nickel 0.05–0.10 0.80 0.040 0.030 1.40–2.00 10.0–12.0 20.0–22.0 ... ... ... N 0.14–0.20
modified with nitrogen Ce 0.03–0.08
and cerium
F 46 S30600 18 chromium, 15 0.018 2.00 0.020 0.020 3.7–4.3 14.0–15.5 17.0–18.5 0.20 ... ... Cu 0.50
nickel, 4 silicon
F 47 S31725 19 chromium, 15 0.030 2.00 0.045 0.030 0.75 13.0–17.5 18.0–20.0 4.0–5.0 ... ... N 0.10
nickel, 4 molybdenum
317LMG

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A182/A182M − 13a
TABLE 2 Continued
Identifi- UNS Grade Composition, %
cation Desig- Carbon Manga- Phos- Sulfur Silicon Nickel Chromium Molybde- Colum- Titan- Other
Symbol nation nese phorus num bium ium Elements
F 48 S31726 19 chromium, 15 0.030 2.00 0.045 0.030 0.75 13.5–17.5 17.0–20.0 4.0–5.0 ... ... N 0.10–0.20
nickel, 4 molybdenum
317LMNG
F 49 S34565 24 chromium, 17 0.030 5.0–7.0 0.030 0.010 1.00 16.0–18.0 23.0–25.0 4.0–5.0 0.10 ... N 0.40–0.60
nickel, 6 manganese, 5
molybdenum
F 56 S33228 32 nickel, 27 chromium 0.04–0.08 1.00 0.020 0.015 0.30 31.0–33.0 26.0–28.0 ... 0.6–1.0 ... Ce 0.05–0.10
with columbium Al 0.025
F 58 S31266 24 chromium, 20 0.030 2.0–4.0 0.035 0.020 1.00 21.0–24.0 23.0–25.0 5.2–6.2 ... ... N 0.35–0.60
nickel, 6 molybdenum, Cu 1.00–2.50

--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---
2 tungsten with W 1.50–2.50
nitrogen
F 62 N08367 21 chromium, 25 0.030 2.00 0.040 0.030 1.00 23.5–25.5 20.0–22.0 6.0–7.0 ... ... N 0.18–0.25
nickel, 6.5 molybdenum Cu 0.75
F 63 S32615 18 chromium, 20 0.07 2.00 0.045 0.030 4.8-6.0 19.0-22.0 16.5-19.5 0.30-1.50 ... ... Cu 1.50-2.50
nickel, 5.5 silicon
F 64 S30601 17.5 chromium, 17.5 0.015 0.50-0.80 0.030 0.013 5.0-5.6 17.0-18.0 17.0-18.0 0.20 ... ... Cu 0.35, N 0.05
nickel, 5.3 silicon
F 904L N08904 21 chromium, 26 0.020 2.0 0.040 0.030 1.00 23.0–28.0 19.0–23.0 4.0–5.0 ... ... Cu 1.00–2.00
nickel, 4.5 molybdenum N 0.10
904LG
Ferritic-Austenitic Stainless Steels
F 50 S31200 25 chromium, 6 nickel, 0.030 2.00 0.045 0.030 1.00 5.5–6.5 24.0–26.0 1.20–2.00 ... ... N 0.14–0.20
modified with nitrogen
F 51 S31803 22 chromium, 5.5 0.030 2.00 0.030 0.020 1.00 4.5–6.5 21.0–23.0 2.5–3.5 ... ... N 0.08–0.20
nickel, modified with
nitrogen
F 52 S32950 26 chromium, 3.5 0.030 2.00 0.035 0.010 0.60 3.5–5.2 26.0–29.0 1.00–2.50 ... ... N 0.15–0.35
nickel, 1.0 molybdenum
F 53 S32750 25 chromium, 7 nickel, 0.030 1.20 0.035 0.020 0.80 6.0–8.0 24.0–26.0 3.0–5.0 ... ... N 0.24–0.32
4 molybdenum, Cu 0.50
modified with nitrogen
2507G
F 54 S39274 25 chromium, 7 nickel, 0.030 1.00 0.030 0.020 0.80 6.0–8.0 24.0–26.0 2.5–3.5 ... ... N 0.24–0.32
modified with nitrogen Cu 0.20–0.80
and tungsten W 1.50–2.50
F 55 S32760 25 chromium, 7 nickel, 0.030 1.00 0.030 0.010 1.00 6.0–8.0 24.0–26.0 3.0–4.0 ... ... N 0.20–0.30
3.5 molybdenum, Cu 0.50–1.00
modified with nitrogen W 0.50–1.00O
and tungsten
F 57 S39277 26 chromium, 7 nickel, 0.025 0.80 0.025 0.002 0.80 6.5–8.0 24.0–26.0 3.0–4.0 ... ... Cu 1.20–2.00
3.7 molybdenum W 0.80–1.20
N 0.23–0.33
F 59 S32520 25 chromium, 6.5 0.030 1.50 0.035 0.020 0.80 5.5–8.0 24.0–26.0 3.0–5.0 ... ... N 0.20–0.35
nickel, 4 molybdenum Cu 0.50–3.00
with nitrogen
F 60 S32205 22 chromium, 5.5 0.030 2.00 0.030 0.020 1.00 4.5–6.5 22.0–23.0 3.0–3.5 ... ... N 0.14–0.20
nickel, 3 molybdenum,
modified with nitrogen
2205G
F 61 S32550 26 chromium, 6 nickel, 0.040 1.50 0.040 0.030 1.00 4.5–6.5 24.0–27.0 2.9–3.9 ... ... Cu 1.50–2.50
3.5 molybdenum with N 0.10–0.25
nitrogen and copper
255G
F 65 S32906 29 chromium, 6.5 0.030 0.80–1.50 0.030 0.030 0.80 5.8–7.5 28.0–30.0 1.5–2.6 ... ... Cu 0.80
nickel, 2 molybdenum N 0.30–0.40
with nitrogen
F 66 S32202 22 chromium, 2.0 0.030 2.00 0.040 0.010 1.00 1.00–2.80 21.5–24.0 0.45 ... ... N 0.18–0.26
nickel, 0.25
molybdenum with
nitrogen
F 67 S32506 25 chromium, 6 nickel, 0.030 1.00 0.040 0.015 0.90 5.5–7.2 24.0–26.0 3.0–3.5 ... ... N 0.08–0.20
3 molybdenum, with W 0.05–0.30
nitrogen
and tungsten
F 68 S32304 23 chromium, 4 nickel, 0.030 2.50 0.040 0.030 1.00 3.0–5.5 21.5–24.5 0.05–0.60 N 0.05–0.20
with nitrogen Cu 0.05–0.60
A
All values are maximum unless otherwise stated. Where ellipses (...) appear in this table, there is no requirement and analysis for the element need not be determined
or reported.
B
Grade F 2 was formerly assigned to the 1 % chromium, 0.5 % molybdenum grade which is now Grade F 12.
C
The present grade F 5a (0.25 max carbon) previous to 1955 was assigned the identification symbol F 5. Identification symbol F 5 in 1955 was assigned to the 0.15 max
carbon grade to be consistent with ASTM specifications for other products such as pipe, tubing, bolting, welding fittings, and the like.
D
Applies to both heat and product analyses.

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A182/A182M − 13a
E
For Grade F22V, rare earth metals (REM) may be added in place of calcium, subject to agreement between the producer and the purchaser. In that case the total amount
of REM shall be determined and reported.
F
The ratio of Titanium to Nitrogen shall be $ 3.5. Alternatively, in lieu of this ratio limit, Grade F23 shall have a minimum hardness of 275 HV (26 HRC, 258 HBW) in the
hardened condition (see 3.2.1). Hardness testing shall be performed in accordance with 9.6.3, and the hardness testing results shall be reported on the material test report
(see 18.2.5).
G
Naming system developed and applied by ASTM.
H
Grade F XM-27Cb shall have a nickel plus copper content of 0.50 max %. Product analysis tolerance over the maximum specified limit for carbon and nitrogen shall be
0.002 %.
I
Grade F 316Ti shall have a titanium content not less than five times the carbon plus nitrogen content and not more than 0.70 %.
J
Grade F 321 shall have a titanium content of not less than five times the carbon content and not more than 0.70 %.
K
Grade F 321H shall have a titanium content of not less than four times the carbon content and not more than 0.70 %.
L
Grades F 347 and F 348 shall have a columbium content of not less than ten times the carbon content and not more than 1.10 %.
M
Grades F 347H and F 348H shall have a columbium content of not less than eight times the carbon content and not more than 1.10 %.
N
Grade F347LN shall have a columbium content of not less than 15 times the carbon content.
O
% Cr + 3.3 × % Mo + 16 × % N = 40 min.

may verify that the requirement has been met by testing at any 10. Grain Size for Austenitic Grades
location on the forging provided such testing does not render 10.1 All H grades and grade F 63 shall be tested for average
the forging useless. grain size by Test Methods E112.
9.6.2 When the reduced number of tension tests permitted 10.1.1 Grades F 304H, F 309H, F 310H, and F 316H shall
by 9.5.1.1 is applied, additional hardness tests shall be made on have a grain size of ASTM No. 6 or coarser.
forgings or samples, as defined in 9.2, scattered throughout the 10.1.2 Grades F 321H, F 347H, and F 348H shall have a
load (see Note 2). At least eight samples shall be checked from grain size of ASTM No. 7 or coarser.
each batch load, and at least one check per hour shall be made 10.1.3 Grade F 63 shall have a grain size of ASTM No. 3 or
from a continuous run. When the furnace batch is less than finer.
eight forgings, each forging shall be checked. If any check falls
outside the prescribed limits, the entire lot of forgings shall be 11. Corrosion Testing for Austenitic Grades
reheat treated and the requirements of 9.5.1 shall apply. 11.1 Corrosion testing is not required by this specification.
NOTE 2—The tension test required in 9.5.1 is used to determine material 11.2 Austenitic grades shall be capable of meeting the
capability and conformance in addition to verifying the adequacy of the intergranular corrosion test requirements described in Supple-
heat-treatment cycle. Additional hardness tests in accordance with 9.6.2
are required when 9.5.1.1 is applied to ensure the prescribed heat-treating mentary Requirement S4.
cycle and uniformity throughout the load. 12. Retreatment
9.6.3 When the alternative to the Ti/N ratio limit for F23 is
12.1 If the results of the mechanical tests do not conform to
applied, (see Note P in Table 2), a minimum of two pieces per
the requirements specified, the manufacturer may reheat treat
batch or continuous run as defined in 9.6.2 shall be hardness
the forgings and repeat the tests specified in Section 9.
tested, in the hardened condition (see 3.2.1), to ensure that the
forgings are within the hardness limit given for F23 in Note P 13. Nondestructive Test Requirements
of Table 2. The test samples shall be taken at the mid thickness 13.1 Hollow forgings of Grades F 91, F 92, F 122, and F
of the thickest section of the product. Testing shall be per- 911, NPS 4 [DIN 100] and larger, whose internal surfaces are
formed in accordance with the Test Method E92 or as specified not accessible to magnetic particle or liquid penetrant
in Specification A961/A961M. examination, shall be examined by an ultrasonic test in
9.7 Notch Toughness Requirements—Grades F 3V, F 3VCb, accordance with Practice A388/A388M.
and F 22V. 13.2 Hollow forgings of Grades F 91, F 92, F 122, and F
9.7.1 Impact test specimens shall be Charpy V-notch Type. 911, NPS 4 [DIN 100] and larger, whose internal surfaces are
The usage of subsize specimens due to material limitations accessible to magnetic particle or liquid penetrant examination,
must have prior purchaser approval. shall be examined on their internal surfaces by either a
9.7.2 The Charpy V-notch test specimens shall be obtained magnetic particle test in accordance with Practice A275/
as required for tension tests in 9.2, 9.3 and 9.5. One set of three A275M, or by a liquid penetrant examination in accordance
Charpy V-notch specimens shall be taken from each tensile with Test Method E165, as applicable.
specimen location.
9.7.3 The longitudinal axis and mid-length of impact speci- 13.3 Time of Examination:
men shall be located similarly to the longitudinal axis of the 13.3.1 Examination by one of the methods in 13.1 or 13.2,
tension test specimens. The axis of the notch shall be normal to for specification acceptance, shall be performed after all
--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---

the nearest heat-treated surface of the forging. mechanical processing and heat treatment. This requirement
9.7.4 The Charpy V-notch tests shall meet a minimum does not preclude additional testing at earlier stages in the
energy absorption value of 40 ft-lbf [54 J] average of three processing.
specimens. One specimen only in one set may be below 40 13.4 Evaluation of Imperfections Found by Ultrasonic Ex-
ft-lbf [54 J], and it shall meet a minimum value of 35 ft-lbf [48 amination:
J]. 13.4.1 Forgings producing a signal equal to or greater than
9.7.5 The impact test temperature shall be 0 °F [−18 °C]. the lowest signal produced by the reference discontinuities

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TABLE 3 Tensile and Hardness RequirementsA
Grade Symbol Tensile Strength, Yield Strength, min, Elongation in 2 in. Reduction of Brinell Hardness
min, ksi [MPa] ksi [MPa]B [50 mm] or 4D, Area, min, % Number, HBW
min, %
Low Alloy Steels

F1 70 [485] 40 [275] 20 30 143–192


F2 70 [485] 40 [275] 20 30 143–192
F5 70 [485] 40 [275] 20 35 143–217
F 5a 90 [620] 65 [450] 22 50 187–248
F9 85 [585] 55 [380] 20 40 179–217
F 10 80 [550] 30 [205] 30 50 ...
F 91 90 [620] 60 [415] 20 40 190–248
F 92 90 [620] 64 [440] 20 45 269 max
F 122 90 [620] 58 [400] 20 40 250 max
F 911 90 [620] 64 [440] 18 40 187–248
F 11 Class 1 60 [415] 30 [205] 20 45 121–174
F 11 Class 2 70 [485] 40 [275] 20 30 143–207
F 11 Class 3 75 [515] 45 [310] 20 30 156–207
F 12 Class 1 60 [415] 32 [220] 20 45 121–174
F 12 Class 2 70 [485] 40 [275] 20 30 143–207
F 21 75 [515] 45 [310] 20 30 156–207
F 3V, and F 3VCb 85–110 [585–760] 60 [415] 18 45 174–237
F 22 Class 1 60 [415] 30 [205] 20 35 170 max
F 22 Class 3 75 [515] 45 [310] 20 30 156–207
F 22V 85–110 [585–780] 60 [415] 18 45 174–237
F 23 74 [510] 58 [400] 20 40 220 max
F 24 85 [585] 60 [415] 20 40 248 max
FR 63 [435] 46 [315] 25 38 197 max
F 36, Class 1 90 [620] 64 [440] 15 ... 252 max
F 36, Class 2 95.5 [660] 66.5 [460] 15 ... 252 max
Martensitic Stainless Steels
F 6a Class 1 70 [485] 40 [275] 18 35 143–207
F 6a Class 2 85 [585] 55 [380] 18 35 167–229
F 6a Class 3 110 [760] 85 [585] 15 35 235–302

--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---
F 6a Class 4 130 [895] 110 [760] 12 35 263–321
F 6b 110–135 [760–930] 90 [620] 16 45 235–285
F 6NM 115 [790] 90 [620] 15 45 295 max
Ferritic Stainless Steels
F XM-27Cb 60 [415] 35 [240] 20 45 190 max
F 429 60 [415] 35 [240] 20 45 190 max
F 430 60 [415] 35 [240] 20 45 190 max
Austenitic Stainless Steels
F 304 75 [515]C 30 [205] 30 50 ...
F 304H 75 [515]C 30 [205] 30 50 ...
F 304L 70 [485]D 25 [170] 30 50 ...
F 304N 80 [550] 35 [240] 30E 50F ...
F 304LN 75 [515]C 30 [205] 30 50 ...
F 309H 75 [515]C 30 [205] 30 50 ...
F 310 75 [515]C 30 [205] 30 50 ...
F 310MoLN 78 [540] 37 [255] 25 40 ...
F 310H 75 [515]C 30 [205] 30 50 ...
F 316 75 [515]C 30 [205] 30 50 ...
F 316H 75 [515]C 30 [205] 30 50 ...
F 316L 70 [485]D 25 [170] 30 50 ...
F 316N 80 [550] 35 [240] 30E 50F ...
F 316LN 75 [515]C 30 [205] 30 50 ...
F 316Ti 75 [515] 30 [205] 30 40 ...
F 317 75 [515]C 30 [205] 30 50 ...
F 317L 70 [485]D 25 [170] 30 50 ...
S31727 80 [550] 36 [245] 35 50 217
S32053 93 [640] 43 [295] 40 50 217
F 347 75 [515]C 30 [205] 30 50 ...
F 347H 75 [515]C 30 [205] 30 50 ...
F 347LN 75 [515] 30 [205] 30 50 ...
F 348 75 [515]C 30 [205] 30 50 ...
F 348H 75 [515]C 30 [205] 30 50 ...
F 321 75 [515]C 30 [205] 30 50 ...
F 321H 75 [515]C 30 [205] 30 50 ...
F XM-11 90 [620] 50 [345] 45 60 ...
F XM-19 100 [690] 55 [380] 35 55 ...
F 20 80 [550] 35 [240] 30 50 ...
F 44 94 [650] 44 [300] 35 50 ...
F 45 87 [600] 45 [310] 40 50 ...
F 46 78 [540] 35 [240] 40 50 ...
F 47 75 [525] 30 [205] 40 50 ...
F 48 80 [550] 35 [240] 40 50 ...

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TABLE 3 Continued
Grade Symbol Tensile Strength, Yield Strength, min, Elongation in 2 in. Reduction of Brinell Hardness
min, ksi [MPa] ksi [MPa]B [50 mm] or 4D, Area, min, % Number, HBW
min, %
F 49 115 [795] 60 [415] 35 40 ...
F 56 73 [500] 27 [185] 30 35 ...
F 58 109 [750] 61 [420] 35 50 ...
F 62 95 [655] 45 [310] 30 50 ...
F 63 80 [550] 32 [220] 25 ... 192 max
F 64 90 [620] 40 [275] 35 50 217 max
F 904L 71 [490] 31 [215] 35 ... ...
Ferritic-Austenitic Stainless Steels
F 50 100–130 65 [450] 25 50 ...
[690–900]
F 51 90 [620] 65 [450] 25 45 ...
F 52 100 [690] 70 [485] 15 ... ...
F 53 # 2 in. 116 [800] 80 [550] 15 ... 310 max
[50 mm]G
F 53 > 2 in. 106 [730] 75 [515] 15 ... 310 max
[50 mm]G
F 54 116 [800] 80 [550] 15 30 310 max
F 55 109–130 80 [550] 25 45 ...
[750–895]
F 57 118 [820] 85 [585] 25 50 ...
F 59 112 [770] 80 [550] 25 40 ...
F 60 95 [655] 65 [450] 25 45 ...
F 61 109 [750] 80 [550] 25 50 ...
F 65 109 [750] 80 [550] 25 ... ...
F 66 94 [650] 65 [450] 30 ... 290 max
F 67 90 [620] 65 [450] 18 ... 302
F 68 87 [600] 58 [400] 25 ... 290 max
A
Where ellipses appear in this table, there is no requirement and the test for the value need neither be performed nor a value reported.
B
Determined by the 0.2 % offset method. For ferritic steels only, the 0.5 % extension-under-load method may also be used.
C
For sections over 5 in. [130 mm] in thickness, the minimum tensile strength shall be 70 ksi [485 MPa].
D
For sections over 5 in. [130 mm] in thickness, the minimum tensile strength shall be 65 ksi [450 MPa].
E
Longitudinal. The transverse elongation shall be 25 % in 2 in. or 50 mm, min.
F
Longitudinal. The transverse reduction of area shall be 45 % min.
G
Maximum section thickness at the time of heat treatment; see 7.4.

shall be identified and separated from the acceptable forgings. amount so removed. To be accepted, retested forgings shall
The area producing the signal may be reexamined. meet the test requirement.
13.4.2 Such forgings shall be rejected if the test signals were 13.5.3 If the imperfection is explored to the extent that it can
produced by imperfections that cannot be identified or were be identified as non-rejectable, the forging may be accepted
produced by cracks or crack-like imperfections. Such forgings without further test provided that the imperfection does not
may be repaired. To be accepted, a repaired forging shall pass encroach on the minimum required wall thickness.
the same nondestructive test by which it was rejected, and it
shall meet the minimum wall thickness requirements of this 14. Workmanship, Finish, and Appearance
specification and the purchase order. 14.1 Forgings shall conform to the requirements of Speci-
13.4.3 If the test signals were produced by visual imperfec- fication A961/A961M.

--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---
tions such as scratches, surface roughness, dings, tooling 14.2 The forgings shall be free of scale, machining burrs
marks, cutting chips, steel die stamps, or stop marks, the which might hinder fit-up, and other injurious imperfections as
forging is permitted to be accepted based upon visual exami- defined herein. The forgings shall have a workmanlike finish,
nation provided that the depth of the imperfection is less than and machined surfaces (other than surfaces having special
0.004 in. [0.1 mm] or 12.5 % of the specified wall thickness, requirements) shall have a surface finish not to exceed 250 AA
whichever is the greater. (arithmetic average) roughness height.
13.5 Treatment of Imperfections Found by Magnetic Par-
ticle or Liquid Penetrant Examination: 15. Repair by Welding
13.5.1 Defects shall be completely removed prior to weld 15.1 Weld repairs shall be permitted (see Supplementary
repair by chipping or grinding to sound metal. Removal of Requirement S58 of Specification A961/A961M) at the discre-
these defects shall be verified by magnetic particle inspection tion of the manufacturer with the following limitations and
in accordance with Test Method A275/A275M or by liquid requirements:
penetrant inspection in accordance with Test Method E165. 15.1.1 The welding procedure and welders shall be qualified
13.5.2 Rejected forgings may be reconditioned and retested, in accordance with Section IX of the ASME Boiler and
provided that the wall thickness is not decreased to less than Pressure Vessel Code.
that required by this specification and the purchase order. The 15.1.2 The weld metal shall be deposited using the elec-
outside diameter at the point of grinding may be reduced by the trodes specified in Table 4 except as otherwise provided in

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TABLE 4 Repair Welding Requirements
Grade Symbol ElectrodesA Recommended Preheat and Post Weld Heat-Treatment
Interpass Temperature Temperature, Minimum or
Range, °F [°C] Range, °F [°C]
Low Alloy Steels
F1 E 7018-A 1 200–400 [95–205] 1150 [620]
F2 E 8018-B 1 300–600 [150–315] 1150 [620]
F5 E80XX-B6, where XX can be 400–700 [205–370] 1250 [675]
15, 16, or 18
F 5a E80XX-B6, where XX can be 400–700 [205–370] 1250 [675]
15, 16, or 18
F9 E80XX-B8, where XX can be 400–700 [205–370] 1250 [675]
15, 16, or 18
F 10B ... ... ...
F 91 . . .C 400–700 [205–370] 1350–1470 [730–800]
F 92 . . .D 400–700 [205–370] 1350–1470 [730–800]
F 122 . . .D 400–700 [205–370] 1350–1470 [730–800]
F 911 . . .D 400–700 [205–370] 1365–1435 [740–780]
F 11, Class 1, 2, E 8018-B 2 300–600 [150–315] 1150 [620]
and 3
F 12, Class 1 and 2 E 8018-B 2 300–600 [150–315] 1150 [620]
F 21 E 9018-B 3 300–600 [150–315] 1250 [675]
--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---

F 3V, and F 3VCb 3 % Cr, 1 % Mo, 1⁄4 % V-Ti 300–600 [150–315] 1250 [675]
F 22 Class 1 E 9018-B 3 300–600 [150–315] 1250 [675]
F 22 Class 3 E 9018-B 3 300–600 [150–315] 1250 [675]
F 22V 2.25 % Cr, 1 % Mo, 0.25 % 300–600 [150–315] 1250 [675]
V-Cb
F 23 2.25 % Cr, 1.6 % W, 0.25 % 300-600 [150–315] 1350–1470 [730–800]
V-Mo-Cb-B
E
F 24 2.25 % Cr, 1 % Mo, 0.25 % V 200–400 [95–205] 1350–1470 [730–800]E
F 36, Class 1 1.15 Ni, 0.65 Cu, Mo, Cb 400–700 [205–370] 1100–1200 [595–650]
F 36, Class 2 1.15 Ni, 0.65 Cu, Mo, Cb 400–700 [205–370] 1000–1150 [540–620]
Martensitic Stainless Steels
F 6a, Class 1 E 410-15 or 16 400–700 [205–370] 1250 [675]
F 6a, Class 2 E 410-15 or 16 400–700 [205–370] 1250 [675]
F 6b 13 % Cr, 11⁄2 % Ni, 1⁄2 % Mo 400–700 [205–370] 1150 [620]
F 6NM 13 % Cr, 4 % Ni 300–700 [150–370] 1050 [565]
Ferritic Stainless Steels
F XM-27Cb 26 % Cr, 1 % Mo NRF NR
F 429 E 430-16 400–700 [205–370] 1400 [760]
F 430 E 430-16 NR 1400 [760]
FR E 8018-C2 NR NR
Austenitic Stainless Steels
F 304 E 308-15 or 16 NR 1900 [1040] + WQG
F 304L E 308L-15 or 16 NR 1900 [1040] + WQ
F 304H E 308-15 or 16H or E308H-XX NR 1900 [1040] + WQ
F 304N E 308-15 or 16 NR 1900 [1040] + WQ
F 304LN E 308L-15 or 16 NR 1900 [1040] + WQ
F 309H E 309-15 or 16H or E309H-XX NR 1900 [1040] + WQ
F 310 E 310-15 or 16 NR 1900 [1040] + WQ
F 310H E 310-15 or 16H NR 1900 [1040] + WQ
F 310MoLN E 310Mo-15 or 16 NR 1920–2010 [1050–1100] + WQ
F 316 E 316-15 or 16 NR 1900 [1040] + WQ
F 316L E 316L-15 or 16 NR 1900 [1040] + WQ
F 316H E 316-15 or 16H or E316H-XX NR 1900 [1040] + WQ
F 316N E 316-15 or 16 NR 1900 [1040] + WQ
F 316LN E 316L-15 or 16 NR 1900 [1040] + WQ
F 316Ti E 316-15 or 16 NR 1900 [1040] + WQ
F 317 E 317-15 or 16 NR 1900 [1040] + WQ
F 317L E 317L-15 or 16 NR 1900 [1040] + WQ
S31727 ... NR ...
S32053 ... NR ...
F 321B E 347-15 or 16 NR 1900 [1040] + WQ
F 321HB E 347-15 or 16H NR 1925 [1050] + WQ
F 347 E 347-15 or 16 NR 1900 [1040] + WQ
F 347H E 347-15 or 16H NR 1925 [1050] + WQ
F 347LNI E 347-15 or 16 NR ...
E 348 E 347-15 or 16 NR 1900 [1040] + WQ
F 348H E 347-15 or 16H NR 1925 [1050] + WQ
F XM-11 XM-10W NR NR
F XM-19 XM-19W NR NR
F 20 E/ER-320, 320LR NR 1700–1850 [925–1010] + WQ
F 44 E NiCrMo-3 NR 2100 [1150] + WQ
F 45B ... ... ...
F 46 ... ... ...
F 47 . . .J ... 2100 [1150] + WQ
F 48 . . .J ... 2100 [1150] + WQ

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TABLE 4 Continued
Grade Symbol ElectrodesA Recommended Preheat and Post Weld Heat-Treatment
Interpass Temperature Temperature, Minimum or
Range, °F [°C] Range, °F [°C]
F 49 . . .J ... 2100 [1150] + WQ
F 58 E NiCrMo-10 ... 2100 [1150] + WQ
F 62 E NiCrMo-3 NR 2025 [1105] + WQ
F 904L E NiCrMo-3 NR 1920–2100 [1050–1150] + WQ
Ferritic-Austenitic Stainless Steels
F 50 25 % Cr, 6 % Ni, 1.7 % Mo NR NR
F 51 22 % Cr, 5.5 % Ni, 3 % Mo NR NR
F 52 26 % Cr, 8 % Ni, 2 % Mo NR NR
F 53 25 % Cr, 7 % Ni, 4 % Mo NR NR
F 54 25 % Cr, 7 % Ni, 3 % Mo, NR NR
W
F 55 25 % Cr, 7 % Ni, 3.5 % Mo NR NR
F 57 25 % Cr, 7 % Ni, 3 % Mo, 1.5 % NR NR
Cu, 1 % W
F 59 E Ni CrMo-10 NR NR
F 60 22 % Cr, 5.5 % Ni, 3 % Mo NR NR
F 61 26 % Cr, 9 % Ni, 3.5 % Mo NR NR
F 65 29 % Cr, 6.5 % Ni, 2 % Mo NR NR
F 66 22 % Cr, 2 % Ni, 0.25 % Mo NR NR
F 67 ... NR NR
zF 68 ... NR NR
A
Except for Grades F 91, F 92, F 911, F 122, F 47, F 48, and F 49, electrodes shall comply with AWS Specifications A5.4/A5.4M, A5.5/A5.5M, A5.9/A5.9M, A5.11/A5.11M,
A5.14/A5.14M, A5.23/A5.23M, or A5.28/A5.28M.
B
Purchaser approval required.
C
All repairs in F 91 shall be made with one of the following welding processes and consumables: SMAW, A5.5/A5.5M E90XX-B9; SAW, A5.23/A5.23M EB9 + flux; GTAW,
A5.28/A5.28M ER90S-B9; and FCAW, A5.29/A5.29M E91T1-B9. In addition, the sum of the Ni+Mn content of all welding consumables shall not exceed 1.0 %.
D
All repairs in F 92, F 911, and F 122, shall be made using welding consumables meeting the chemical requirements for the grade in Table 2.
E
Preheat and PWHT are not required for this grade for forgings whose section thickness does not exceed 0.500 in. [12.7 mm].
F
NR = not required.
G
WQ = water quench.
--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---

H
Filler metal shall additionally have 0.04 % minimum carbon.
I
Matching filler metal is available.
J
Match filler metal is available. Fabricators have also used AWS A5.14/A5.14M, Classification ERNiCrMo-3 and AWS A5.11/A5.11M, Class E, ENiCrMo-3 filler metals.

Supplementary Requirement S5. The electrodes shall be pur- 15.1.7 When approval of the purchaser is obtained, the
chased in accordance with AWS Specifications A5.4/A5.4M, limitations set forth in 15.1.6 may be exceeded, but all other
A5.5/A5.5M, A5.9/A5.9M, A5.11/A5.11M, A5.14/A5.14M, requirements of Section 15 shall apply.
A5.23/A5.23M, A5.28/A5.28M, or A5.29/A5.29M. The sub- 15.1.8 No weld repairs are permitted for F 6a Classes 3 and
merged arc process with neutral flux, the gas metal-arc process, 4.
the gas tungsten-arc process, and gas shielded processes using 15.1.9 Post-weld heat treatment times for F 36 are: for Class
flux-core consumables, may be used. 1, up to 2 in. [50 mm] in thickness, 1 h per in. [25 mm], 15
15.1.3 Defects shall be completely removed prior to weld- minutes minimum, and over 2 in. [50 mm], 15 minutes for each
ing by chipping or grinding to sound metal as verified by additional in. of thickness or fraction thereof; for Class 2, 1 h
magnetic-particle inspection in accordance with Test Method per in. [25 mm], 1⁄2 h minimum.
A275/A275M for the low alloy steels and ferritic, martensitic,
or ferritic-austenitic stainless steels, or by liquid-penetrant 16. Inspection
inspection in accordance with Test Method E165 for all grades. 16.1 Inspection provisions of Specification A961/A961M
15.1.4 After repair welding, the welded area shall be ground apply.
smooth to the original contour and shall be completely free of
defects as verified by magnetic-particle or liquid-penetrant 17. Rejection and Rehearing
inspection, as applicable.
17.1 The purchaser shall comply with the provisions of
15.1.5 The preheat, interpass temperature, and post-weld Specification A961/A961M.
heat treatment requirements given in Table 4 shall be met.
Austenitic stainless steel forgings may be repair-welded with- 18. Certification
out the post-weld heat treatment of Table 4, provided purchaser
approval is obtained prior to repair. 18.1 In addition to the certification requirements of Speci-
15.1.6 Repair by welding shall not exceed 10 % of the fication A961/A961M, test reports shall be furnished to the
surface area of the forging nor 331⁄3 % of the wall thickness of purchaser or his representative.
the finished forging or 3⁄8 in. [9.5 mm], whichever is less, 18.2 Test reports shall provide the following where appli-
without prior approval of the purchaser. cable:

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18.2.1 Type heat treatment, Section 7, 19.1.3 Parts meeting all requirements for more than one
18.2.2 Product analysis results, Section 8 of Specification class or grade may be marked with more than one class or
A961/A961M, grade designation such as F 304/F 304H, F 304/F 304L, and the
18.2.3 Tensile property results, Section 9 (Table 3), report like.
the yield strength and tensile strength, in ksi [MPa], elongation 19.1.4 Plugs and bushings furnished to ASME B16.11
and reduction in area, in percent, requirements are not required to be marked.
18.2.4 Chemical analysis results, Section 8 (Table 2), re- 19.1.5 When agreed upon between the purchaser and
ported results shall be to the same number of significant figures manufacturer, and specified in the order, the markings shall be
as the limits specified in Table 2 for that element, painted or stenciled on the fitting or stamped on a metal or
18.2.5 Hardness results, Section 9 (Table 3, and for F23, plastic tag which shall be securely attached to the fitting.
Tables 2 and 3), 19.2 Bar Coding—In addition to the requirements in 19.1,
18.2.6 Grain size results, Section 10, and bar coding is acceptable as a supplemental identification
18.2.7 Any supplementary testing required by the purchase method. The purchaser may specify in the order a specific bar
order. coding system to be used. The bar coding system, if applied at
the discretion of the supplier, should be consistent with one of
19. Product Marking the published industry standards for bar coding. If used on
19.1 In addition to the marking requirements of Specifica- small parts, the bar code may be applied to the box or a

--`,,```,`,``,,`,`,`,```,```,```-`-`,,`,,`,`,,`---
tion A961/A961M, the following additional marking require- substantially applied tag.
ments shall apply:
19.1.1 Quenched and tempered low alloy or martensitic 20. Keywords
stainless forgings shall be stamped with the letters QT follow- 20.1 austenitic stainless steel; chromium alloy steel;
ing the specification designation. chromium-molybdenum steel; ferritic/austenitic stainless steel;
19.1.2 Forgings repaired by welding shall be marked with ferritic stainless steel; martensitic stainless steel; nickel alloy
the letter “W” following the Specification designation. When steel; notch toughness requirements; pipe fittings; piping ap-
repair-welded austenitic stainless steel forgings have not been plications; pressure containing parts; stainless steel fittings;
postweld heat treated in accordance with Table 4, the letters stainless steel forgings; steel; steel flanges; steel forgings,
“WNS” shall be marked following the specification designa- alloy; steel valves; temperature service applications, elevated;
tion. temperature service applications, high; wrought material

SUPPLEMENTARY REQUIREMENTS

In addition to any of the supplementary requirements of Specification A961/A961M, the following


supplementary requirements shall apply only when specified by the purchaser in the order.

S1. Macroetch Test S4. Corrosion Tests


S1.1 A sample forging shall be sectioned and etched to S4.1 All austenitic stainless steels shall pass intergranular
show flow lines and internal imperfections. The test shall be corrosion tests performed in accordance with Practice E of
conducted according to Test Method E340. Details of the test Practices A262.
shall be agreed upon between the manufacturer and the S4.2 Intergranular corrosion tests shall be performed on
purchaser. specimens of ferritic stainless steels as described in Practices
A763.
S2. Heat Treatment Details S4.3 For both the austenitic and ferritic stainless steels,
S2.1 The manufacturer shall furnish a detailed test report details concerning the number of specimens and their source
containing the information required in 18.2 and shall include and location are to be a matter of agreement between the
all pertinent details of the heat-treating cycle given the forg- manufacturer and the purchaser.
ings.
S5. Special Filler Metal
S3. Material for Optimum Resistance to Stress-Corrosion S5.1 In repair-welded F 316, F 316L, F 316H, and F 316N
Cracking forgings, the deposited weld metal shall conform to E 308
composition wire. Forgings repair welded with E 308 weld
S3.1 Austenitic stainless steel shall be furnished in the
metal shall be marked F __ W 308.
solution-annealed condition as a final operation with no sub-
sequent cold working permitted, except, unless specifically
S6. Hardness Test
prohibited by the purchaser, straightening of bars from which
parts are machined is permitted to meet the requirements of S6.1 Each forging shall be hardness tested and shall meet
Specification A484/A484M. the requirements of Table 3.

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A182/A182M − 13a
S8. Heat Treatment of Austenitic Forgings 870 °C] for a minimum of 2 h/in. [4.7 min/mm] of thickness
S8.1 The purchaser shall specify the heat-treatment method and then cooling in the furnace or in air. In addition to the
(in 7.1 or in 7.3.1) that shall be employed. marking required in Section 19, the grade designation symbol
S8.2 The manufacturer shall provide a test report containing shall be followed by the symbol “S10.”
the information required in 18.2 and shall include a statement
of the heat-treatment method employed. S11. Grain Size Requirements for Non-H-Grade Austenitic
Steels Used Above 1000 °F [540 °C]
S9. Grain Size for Austenitic Grades
S9.1 Forgings made from austenitic grades other than H S11.1 Non-H grades of austenitic stainless steels shall have
grades shall be tested for average grain size by Test Method a grain size of No. 7 or coarser as determined in accordance
E112. Details of the test shall be agreed upon between the with Test Methods E112. The grain size so determined shall be
manufacturer and the purchaser. on a certified test report.

S10. Stabilization Treatment


S10.1 Subsequent to the solution anneal for Grades F 321, F
321H, F 347, F 347H, F 348, and F 348H, these grades shall be
given a stabilization heat treatment at 1500 to 1600 °F [815 to

SUMMARY OF CHANGES

Committee A01 has identified the location of selected changes to this specification since the last issue,
A182/A182M–13, that may impact the use of this specification. (Approved October 1, 2013)

(1) Revised 9.3 to clarify test specimen location. (5) Revised Footnote G in Table 3 to indicate that the thickness
(2) Raised nitrogen maximum from 0.22 to 0.25 for F 44 UNS breaks for F 53 apply to the thickness of the bar at the time of
S31254. heat treatment.
(3) Revised Sections 18 and 19 on certification and marking. (6) Added new ASME referenced document, B16.11.
(4) Revised Table 3 to place Note G into the table and to apply
a new Note G for F 53.

Committee A01 has identified the location of selected changes to this specification since the last issue,
A182/A182M–12a, that may impact the use of this specification. (Approved April 1, 2013)

(1) Revised Table 2 to correct the nitrogen content of F304L. (2) Revised Table 4 to add Grade F 68.

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