SPECIFICATION FOR STAINLESS STEEL BARS AND

SHAPES FOR USE IN BOILERS AND OTHER

PRESSURE VESSELS

SA-479 /SA-479M

(Identical with ASTM Specification A 479 /A 479M-99a.)

1. Scope E 112 Test Methods for Determining the Average

1.1 This specification covers hot- and cold-finished Grain Size
bars of stainless steel, including rounds, squares, and E 527 Practice for Numbering Metals and Alloys (UNS)
hexagons, and hot-rolled or extruded shapes such as 2.2 Other Document:
angles, tees, and channels for use in boiler and pressure SAE J1086 Recommended Practice for Numbering Met-
vessel construction. als and Alloys
NOTE 1 — There are standards covering high nickel, chromium, austen-
itic corrosion, and heat-resisting alloy materials. These standards are 3. Ordering Information
under the jurisdiction of ASTM Subcommittee B02.07 and may be
found in Annual Book of ASTM Standards, Vol. 02.04. 3.1 It is the responsibility of the purchaser to specify
all requirements that are necessary for material ordered
1.2 The values stated in either inch-pound units or SI under this specification. Such requirements may include,
(metric) units are to be regarded separately as standards; but are not limited to, the following:
within the text and tables, the SI units are shown in 3.1.1 Quantity (weight or number of pieces),
[brackets]. The values stated in each system are not exact
3.1.2 Dimensions, including diameter or thickness
equivalents; therefore, each system must be used indepen-
(and width), shape or form, applicable prints or sketches,
dent of the other. Combining values from the two systems
length, etc.,
may result in nonconformance with the specification.
3.1.3 Type or UNS designation (Table 1),
1.3 Unless the order specifies the applicable “M”
3.1.4 ASTM designation and edition year if other
specification designation, the material shall be furnished than latest edition,
to the inch-pound units.
3.1.5 Heat treated condition (Section 4),
3.1.6 Finish (see Manufacture section of Specifica-
tion A 484/A 484M),
2. Referenced Documents
3.1.7 Supplementary Requirements invoked for
2.1 ASTM Standards:
special services (described at the end of this specifi-
A 262 Practices for Detecting Susceptibility to Intergran-
cation),
ular Attack in Austenitic Stainless Steels
A 370 Test Methods and Definitions for Mechanical Test- 3.1.8 Whether bars are to be rolled as bars or cut
ing of Steel Products from strip or plate,
A 484/A 484M Specification for General Requirements 3.1.9 Preparation for delivery (see Preparation for
for Stainless Steel Bars, Billets, and Forgings Delivery section of Specification A 484/A 484M),
A 751 Test Methods, Practices, and Terminology for 3.1.10 Marking requirements (see Marking section
Chemical Analysis of Steel Products of Specification A 484/A 484M),

867

--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 SA-479 /SA-479M 2004 SECTION II

3.1.11 Surface preparation of shapes (see Manufac- requirements. Consideration should be given to the corrosive media
ture section of Specification A 484/A 484M), before using a stabilization anneal at less than 1800°F [980°C], as such
a treatment may not be fully effective for all media.
3.1.12 The intended use of the material, if the pur-
chaser considers this useful information. NOTE 4 — Grain size requirements for the H grades are described in
Section 7.
NOTE 2 — A typical ordering description is as follows: 5000 lb [2000
kg]; 1.000 in. [25 mm] round bar by 10 to 12 ft [3 to 4 m]; Type 304 4.1.3 Strain Hardened Austenitic Type 316 — When
or UNS S30400; to Specification A 479 [A 479M]; annealed; centerless Type 316 is desired with increased mechanical properties,
--`,,```,,,,````-`-`,,`,,`,`,,`---

ground; plus any optional supplementary requirements; such as, for the strain hardened condition may be specified and is
example, special marking instructions. produced by solution annealing, as described in 4.1.1,
followed by strain hardening sufficient to meet the
required mechanical properties. Solution annealed and
4. Heat Treatment strain hardened material shall be capable of meeting the
4.1 Austenitic Grades: intergranular corrosion test of Supplementary Require-
4.1.1 Except for the strain-hardened grade (see ment S2.
4.1.3), and the hot-rolled grade (see 4.1.4), all austenitic 4.1.3.1 Two strain hardened conditions have
grades of stainless steel shall be furnished in the solution been established for different applications: Level 1 and
annealed condition, with subsequent light cold drawing Level 2 (see the Mechanical Property Requirements
and straightening permitted (see Supplementary Require- table).
ment S5 if annealing must be the final operation). Solution
annealing for all grades, except the H grades (see 4.1.2), 4.1.4 High tensile Type XM-19 shall be in the hot-
N08367 (see 4.1.8), S31254 (see 4.1.5), S32050 (see rolled or strain-hardened condition and shall be capable
4.1.5), S33228 (see 4.1.7), S34565 (see 4.1.6), and of meeting the mechanical property requirements of the
S35315 (see 4.1.9), shall consist of (1) heating the mate- Mechanical Property Requirements table and passing the
rial to a temperature of 1900°F [1040°C] minimum so that intergranular corrosion test prescribed in S2. The strain
grain boundary carbides enter into solution, and cooling hardened condition is achieved by solution annealing fol-
rapidly to prevent grain boundary carbide precipitation; or lowed by cold working sufficient to develop the required
alternatively (2) (except for the columbium and titanium mechanical properties.
stabilized grades 309Cb, 310Cb, 316Cb, 316Ti, 321, 347, 4.1.5 Solution annealing of S31254 and S32050
and 348) immediately following hot working while the shall consist of heating the material to a temperature
temperature is above 1750°F [955°C] so that grain bound- of 2100°F [1150°C] minimum, for an appropriate time
ary carbides are in solution, cooling rapidly to prevent followed by water quenching or rapidly cooling by other
grain boundary carbide precipitation. When Supplemen- means.
tary Requirement S2 is invoked, all austenitic grades
except S30815 shall pass the intergranular corrosion test 4.1.6 Solution annealing of S34565 shall consist
requirements described in S2. of heating the material in the range of temperature from
2050°F [1120°C] to 2140°F [1170°C] for an appropriate
4.1.2 For H grades, the minimum solution anneal-
time, followed by water quenching or rapidly cooling by
ing temperatures shall be as follows:
other means.
4.1.2.1 When hot finished, 1900°F [1040°C] for
Types 304H, 309H, 310H, and 316H; 1925°F [1050°C] 4.1.7 Solution annealing of S33228 shall consist
for Types 321H, 347H, and 348H. of heating the material in the temperature range 2050 to
2160°F [1120 to 1180°C] for an appropriate time fol-
4.1.2.2 When cold worked prior to solution lowed by water quenching or rapid cooling by other
annealing, 1900°F [1040°C] for Types 304H, 309H, means.
310H, and 316H; 2000°F [1095°C] for Types 321H,
347H, and 348H. 4.1.8 Solution annealing of N08367 shall consist of
heating the material to a temperature of 2025°F [1105°C]
NOTE 3 — Solution annealing temperatures above 1950°F [1065°C]
minimum for an appropriate time followed by water
may impair the resistance to intergranular corrosion after subsequent
exposure to sensitizing conditions in the stabilized grades, Types 321, quenching or rapidly cooling by other means.
321 H, 347, 347 H, 348 and 348 H. When intergranular corrosion is 4.1.9 Solution annealing of S35315 shall consist of
of concern, the purchaser should specify the corrosion test of S2 (to
be conducted on sensitized specimens). The manufacturer may, if neces-
heating the material to a temperature of 2100°F [1150°C]
sary, use a lower temperature resolution anneal or a stabilization anneal minimum for an appropriate time followed by water
after a high temperature solution anneal in order to meet corrosion test quenching or rapidly cooling by other means.

868

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 PART A — FERROUS MATERIAL SPECIFICATIONS SA-479 /SA-479M

4.2 Austenitic-Ferritic Grades: 4.4.2.2 Condition 2 — 1100°F [595°C] mini-

4.2.1 S31803, S32205, and S32550 shall be fur- mum, 1400°F [760°C] maximum.
nished in the annealed condition with subsequent straight- 4.4.2.3 Condition 3 — 1050°F [565°C] mini-
ening permitted. The annealing treatment of S31803 and mum, 1400°F [760°C] maximum.
S32550 shall consist of heating the material to a tempera- 4.4.3 Types XM-30, 414, and 431 tempered materi-
ture of 1900°F [1040°C] minimum for an appropriate als shall be held at 1100°F [595°C], minimum, for at least
time followed by water quenching or rapid cooling by 1 h/in. [25 mm] of cross section. Maximum tempering
other means. The annealing treatment for S32205 shall temperature shall be 1400°F [760°C].
consist of heating the material to a temperature of 1900°F
[1040°C] minimum for an appropriate time followed by 4.4.4 For S41425, heat to 1700°F [925°C] mini-
water quenching. mum and hold for 1 h at temperature minimum. Air cool
to below 90°F [32°C] and temper at 1100°F [595°C]
4.2.2 S32950 shall be annealed by heating the mate- minimum of 1 h per inch of cross-sectional thickness
rial to a temperature of 1825°F [995°C] to 1875°F minimum.
[1025°C] for an appropriate time followed by water
quenching or rapid cooling by other means. 4.4.5 For S41500 heat to 1750°F [955°C] mini-
mum, air cool to 200°F [95°C] or lower prior to any
4.2.3 S32750 shall be annealed by heating the mate- optional intermediate temper and prior to the final temper.
rial to a temperature of 1880°F [1025°C] to 2060°F The final temper shall be between 1050°F [565°C] and
[1125°C] for an appropriate time followed by water 1150°F [620°C].
quenching or rapid cooling by other means. Subsequent
4.4.6 When the purchaser elects to perform the
straightening shall be permitted.
hardening and tempering heat treatment, martensitic
4.2.4 S32760 shall be annealed by heating the mate- materials shall be supplied by the manufacturer in the
rial to a temperature of 2010°F [1100°C] to 2085°F annealed condition (see 4.4.1). In this case it shall be
[1140°C] for an appropriate time followed by water the purchaser’s responsibility to apply the proper heat
quenching or rapid cooling by other means. treatment and to conduct the tests he deems necessary to
4.2.5 UNS S32906 shall be annealed by heating the assure that the required properties are obtained.
material to a temperature of 1900°F [1040°C] to 1980°F
[1080°C] for an appropriate time followed by rapid cool-
5. General Requirements
ing in air or water. Subsequent straightening shall be
permitted. 5.1 In addition to the requirements of this specifica-
tion, all requirements of the current editions of Specifica-
4.2.6 S39277 shall be annealed by heating the mate- tion A 484/A 484M shall apply. Failure to comply with
rial to 1940°F [1060°C] to 2060°F [1125°C] for an appro- the general requirements of Specification A 484/A 484M
priate time followed by water quenching or rapid cooling constitutes nonconformance with this specification.
by other means. Subsequent straightening shall be per-
mitted.
6. Chemical Composition
4.3 Ferritic Grades — Ferritic grades shall be
annealed to meet the requirements of the Mechanical 6.1 Chemical composition shall be reported to the
Property Requirements table. purchaser, or his representative, and shall conform to the
requirements specified in Table 1.
4.4 Martensitic Grades:
6.2 When a product analysis is performed or requested
4.4.1 All grades of martensitic steels shall be sup- by the purchaser, the tolerance limits as described in
plied in either the annealed condition or in the tempered Specification A 484/A 484M apply unless Supplemen-
condition as specified by the purchaser (see 3.1.3). Tem- tary Requirement S3 is invoked.
pered material shall be normalized, or shall be liquid
quenched from 1700°F [925°C], minimum, followed by 6.3 Methods and practices relating to chemical analy-
tempering in accordance with 4.4.2, 4.4.3, or 4.4.5. sis required by this specification shall be in accordance
with Test Methods, Practices, and Terminology A 751.
4.4.2 Types 403 and 410 tempered material shall
be held at tempering temperature for at least 1 h/in. (25.4
mm) of cross section as follows: 7. Grain Size for Austenitic Grades
4.4.2.1 Condition 1 — 1250°F [675°C] mini- 7.1 All austenitic grades shall be tested for average
mum, 1400°F [760°C] maximum. grain size by Test Methods E 112.

869

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 SA-479 /SA-479M 2004 SECTION II

7.2 The H grades shall conform to an average grain the purchase order shall be furnished at the time of ship-
size as follows: ment. The certification shall be positively relatable to the
7.2.1 ASTM No. 6 or coarser for Types 304H, lot of material represented.
309H, 310H, and 316H,
7.2.2 ASTM No. 7 or coarser for Types 321H, 11. Product Marking
347H, and 348H.
11.1 In addition to the marking requirements of Speci-
7.3 For S32615, the grain size as determined in accor- fication A 484/A 484M, materials which have been heat
dance with Test Methods E 112, comparison method, treated in accordance with 4.1, 4.2, 4.3, 4.4 or have been
Plate 11, shall be No. 3 or finer. strain hardened in accordance with 4.1.3 shall be identi-
fied by placement of the following symbols after the
7.4 Supplementary Requirement S1 shall be invoked
grade designation:
when non–H grade austenitic stainless steels are ordered
for ASME Code applications for service above 1000°F 11.1.1 Austenitic Grades:
(540°C). 11.1.1.1 All grades in the annealed condi-
tion — A,
11.1.1.2 Strain hardened Type 316, Level 1 —
8. Mechanical Properties Requirements
S1,
8.1 The material shall conform to the mechanical
property requirements specified in Table 2 for the grade 11.1.1.3 Strain hardened Type 316, Level 2 —
ordered. At least one room-temperature test shall be per- S2,
formed by the manufacturer on a sample from at least 11.1.1.4 Hot-rolled Type XM-19 — H,
one bar or shape from each lot of material. 11.1.1.5 Strain hardened Type XM-19 — S,
8.2 The yield strength shall be determined by the 11.1.1.6 Material meeting Supplementary
offset (0.2%) method as prescribed in Test Methods and Requirement S1 — ELT (unnecessary for H grades).
Definitions A 370.
11.1.1.7 In addition to all other marking require-
8.3 Martensitic material supplied in the annealed con- ments of this specification, when S1 is invoked, all grades
dition shall be capable of meeting the hardened and tem- in the direct quenched condition (heat treated in accor-
pered mechanical properties when heat treated in dance with 4.1.1(2)) shall be marked — D.
accordance with the requirements of 4.4. 11.1.2 Austenitic-Ferritic Grades — All grades in
8.4 Hardness measurements, when required, shall be the annealed condition — A.
made at a location midway between the surface and the 11.1.3 Ferritic Grades — All grades in the annealed
center of the cross section. condition — A.
8.5 Martensitic grades shall be capable of meeting 11.1.4 Martensitic Grades:
the hardness requirements after heat treating as specified 11.1.4.1 All grades in the annealed condi-
in Table 3. tion — A.
11.1.4.2 Types 403 and 410 — COND 1, COND
9. Corrosion Testing 2, or COND 3 as appropriate for the tempering tempera-
ture employed.
9.1 Austenitic stainless steels solution annealed by
the alternative method (see (2) in 4.1.1) shall be tested 11.1.4.3 Type 414, S41500, and Type XM-30
and pass the intergranular corrosion test requirements tempered materials — T.
described in S2.

12. Keywords
10. Certification 12.1 austenitic stainless steel; austenitic-ferritic
10.1 The material manufacturer’s certificate of com- duplex stainless steel; ferritic stainless steel; martensitic
pliance certifying that the material was manufactured and stainless steel; pressure containing parts; pressure vessel
tested in accordance with this specification, together with service; stainless steel bars; stainless steel shapes; temper-
a report of the results required by this specification and ature service applications — high

870

--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 PART A — FERROUS MATERIAL SPECIFICATIONS SA-479 /SA-479M

TABLE 1
CHEMICAL REQUIREMENTS
Composition, %B
UNS Molyb- Other
DesignationA Type Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Nitrogen denum ElementsC

Austenitic Grades

N08367 ... 0.030 2.00 0.040 0.030 1.00 20.00– 23.50– 0.18–0.25 6.00–7.00 Cu 0.75 max
22.00 25.50
S20161 ... 0.15 4.0–6.0 0.045 0.030 3.0–4.0 15.0– 18.0 4.0–6.0 0.08–0.20 ... ...
S20910 XM-19 0.06 4.0–6.0 0.045 0.030 1.00 20.5–23.5 11.5–13.5 0.20–0.40 1.50–3.00 Cb 0.10–0.30;
V 0.10–0.30
S21600 XM-17 0.08 7.5–9.0 0.045 0.030 1.00 17.5–20.5 5.0–7.0 0.25–0.50 2.00–3.00 ...
S21603 XM-18 0.03 7.5–9.0 0.045 0.030 1.00 17.5–20.5 5.0–7.0 0.25–0.50 2.00–3.00 ...
S21800 ... 0.10 7.0–9.0 0.060 0.030 3.5–4.5 16.0–18.0 8.0–9.0 0.08–0.18 ... ...
S21904 XM-11 0.04 8.0–10.0 0.045 0.030 1.00 19.0–21.5 5.5–7.5 0.15–0.40 ... ...
S24000 XM-29 0.08 11.5–14.5 0.060 0.030 1.00 17.0–19.0 2.3–3.7 0.20–0.40 ... ...
S34565 ... 0.030 5.0–7.0 0.030 0.010 1.00 23.0–25.0 16.0–18.0 0.40–0.60 4.0–5.0 Cb 0.10 max
S30200 302 0.15 2.00 0.045 0.030 1.00 17.0–19.0 8.0–10.0 0.10 ... ...
S30400 304 0.08C 2.00 0.045 0.030 1.00 18.0–20.0 8.0–10.5 0.10 ... ...
S30403 304L 0.030 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0 0.10 ... ...
S30409 304H 0.04–0.10 2.00 0.045 0.030 1.00 18.0–20.0 8.0–10.5 ... ... ...
S30451 304N 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0 0.10–0.16 ... ...
S30453 304LN 0.030 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0 0.10–0.16 ... ...
S30600 ... 0.018 2.00 0.020 0.020 3.7–4.3 17.0–18.5 14.0–15.5 ... 0.20 Cu 0.50 max
S30815 ... 0.05–0.10 0.80 0.040 0.030 1.40–2.00 20.0–22.0 10.0–12.0 0.14–0.20 ... Ce 0.03–0.08
S30908 309S 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 ... ... ...
S30909 309H 0.04–0.10 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 ... ... ...
S30940 309Cb 0.08 2.00 0.045 0.030 1.00 22.0–24.0 12.0–16.0 0.10 ... Cb 10ⴛC−1.10
S30880 ER308D 0.08 1.00–2.50 0.030 0.030 0.25–0.60 19.5–22.0 9.0–11.0 ... ... ...
S31008 310S 0.08 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 ... ... ...
S31009 310H 0.04–0.10 2.00 0.045 0.030 1.00 24.0–26.0 19.0–22.0 ... ... ...
S31040 310Cb 0.08 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 0.10 ... Cb 10ⴛC−1.10
S31254 ... 0.020 1.00 0.030 0.010 0.80 19.5–20.5 17.5–18.5 0.18–0.22 6.0–6.5 Cu 0.50–1.00
S31600 316 0.08C 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 0.10 2.00–3.00 ...
S31603 316L 0.030 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 0.10 2.00–3.00 ...
S31609 316H 0.04–0.10 2.00 0.040 0.030 1.00 16.0–18.0 10.0–14.0 ... 2.00–3.00 ...
S31635 316Ti 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 0.10 2.00–3.00 Ti5ⴛ(C+N)−0.70
S31640 316Cb 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 0.10 2.00–3.00 Cb 10ⴛC−1.10
S31651 316N 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 0.10–0.16 2.00–3.00 ...
S31653 316LN 0.030 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 0.10–0.16 2.00–3.00 ...
S31700 317 0.08 2.00 0.045 0.030 1.00 18.0–20.0 11.0–15.0 0.10 3.0–4.0 ...
S31725 ... 0.030 2.00 0.045 0.030 1.00 18.0–20.0 13.50– 0.10 4.0–5.0 Cu 0.75 max
17.50
S31726 ... 0.030 2.00 0.045 0.030 1.00 17.0–20.0 13.50– 0.10–0.20 4.0–5.0 Cu 0.75 max
17.50
S32050 ... 0.030 1.50 0.035 0.020 1.00 22.0–24.0 20.0–22.0 0.24–0.34 6.0–6.8 Cu 0.4 max
S32100 321 0.08E 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 ... ... Ti 5ⴛ(C+N)−0.70F
S32109 321H 0.04–0.10 2.00 0.040 0.030 1.00 17.0–19.0 9.0–12.0 ... ... Ti
4ⴛ(C+N)−0.70F
S32615 ... 0.07 2.00 0.045 0.030 4.8–6.0 16.5–19.5 19.0–22.0 ... 0.30–1.50 Cu 1.50–2.50
S33228 ... 0.04–0.08 1.00 0.020 0.015 0.30 26.0–28.0 31.0–33.0 ... ... Cb 0.60–1.00
Ce 0.05–0.10
Al 0.025 max
S34700 347 0.08E 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 ... ... Cb 10ⴛC min
S34709 347H 0.04–0.10 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 ... ... Cb 8ⴛC−1.00
S34800 348 0.08E 2.00 0.045 0.030 1.00 17.0–19.0 9.0–13.0 ... ... (Cb+Ta) 10ⴛC
min;
Ta 0.10 max;
Co 0.20 max
S34809 348H 0.04–0.10 2.00 0.040 0.030 1.00 17.0–19.0 9.0–13.0 ... ... (Cb+Ta)
8ⴛC−1.00;
Co 0.20 max;
Ta 0.10 max
S35315 ... 0.04–0.08 2.00 0.040 0.030 1.20–2.00 24.0–26.0 34.0–36.0 0.12–0.18 ... Ce 0.03–0.08

871

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 SA-479 /SA-479M 2004 SECTION II

TABLE 1
CHEMICAL REQUIREMENTS (CONT’D)
Composition, %B
UNS
Desig- Molyb-
nationA Type Carbon Manganese Phosphorus Sulfur Silicon Chromium Nickel Nitrogen denum Other ElementsC

Austenitic-Ferritic Grades
S31803 ... 0.030 2.00 0.030 0.020 1.00 21.0–23.0 4.5–6.5 0.08–0.20 2.5–3.5 ...
S32205 ... 0.030 2.00 0.030 0.020 1.00 22.0–23.0 4.5–6.5 0.14–0.20 3.0–3.5 ...
S32550 ... 0.04 1.50 0.040 0.030 1.00 24.0–27.0 4.5–6.5 0.10–0.25 2.9–3.9 Cu 1.50–2.50
S32750 ... 0.030 1.20 0.035 0.020 0.80 24.0–26.0 6.0–8.0 0.24–0.32 3.0–5.0 Cu 0.5 max
S32760G ... 0.030 1.00 0.030 0.010 1.00 24.0–26.0 6.0–8.0 0.20–0.30 3.0–4.0 Cu 0.50–1.00;
W 0.50–1.00
S32906 min ... 0.80 ... ... ... 28.0 5.8 0.30 1.50 ...
max 0.030 1.50 0.030 0.030 0.50 30.0 7.5 0.40 2.60 Cu 0.80
S32950 ... 0.03 2.00 0.035 0.010 0.60 26.0–29.0 3.5–5.2 0.15–0.35 1.00–2.50 ...
S39277 ... 0.025 0.80 0.025 0.002 0.80 24.0–26.0 6.5–8.0 0.23–0.33 3.0–4.0 Cu 1.2–2.0;
W 0.8–1.2

Ferritic Grades
S40500 405 0.08 1.00 0.040 0.030 1.00 11.5–14.5 0.60 max ... ... Al 0.10–0.30
S43000 430 0.12 1.00 0.040 0.030 1.00 16.0–18.0 ... ... ... ...
S43035 439 0.07 1.00 0.040 0.030 1.00 17.0–19.0 0.50 max 0.04 ... Ti 0.20 + 4ⴛ
(C+N) min
S44400 444 0.025 1.00 0.040 0.030 1.00 17.5–19.5 1.00 max 0.035 1.75–2.50 (Ti+Cb) 0.20+4ⴛ
(C+N)−0.80
H
S44627 XM-27 0.010 0.40 0.02 0.02 0.40 25.0–27.5 0.50 max 0.015 maxH 0.75–1.50 Cu 0.20 max; Cb
0.05–0.20
S44700 ... 0.010 0.30 0.025 0.020 0.20 28.0–30.0 0.15 max 0.020 3.5–4.2 (C+N) 0.025 max;
Cu 0.15 max
S44800 ... 0.010 0.30 0.025 0.020 0.20 28.0–30.0 2.00–2.50 0.020 3.5–4.2 (C+N) 0.025 max;
Cu 0.15 max

Martensitic Grades
S40300 403 0.15 1.00 0.040 0.030 0.50 11.5–13.0 ... ... ... ...
S41000 410 0.15 1.00 0.040 0.030 1.00 11.5–13.5 ... ... ... ...
S41040 XM-30 0.18 1.00 0.040 0.030 1.00 11.5–13.5 ... ... ... Cb 0.05–0.30
S41400 414 0.15 1.00 0.040 0.030 1.00 11.5–13.5 1.25–2.50 ... ... ...
S41425 ... 0.05 0.50–1.00 0.020 0.005 0.50 12.0–15.0 4.0–7.0 0.06–0.12 1.50–2.00 Cu 0.30 max
I
S41500 0.05 0.50–1.00 0.030 0.030 0.60 11.5–14.0 3.5–5.5 ... 0.50–1.00 ...
S43100 431 0.20 1.00 0.040 0.030 1.00 15.0–17.0 1.25–2.50 ... ... ...
A
New designations established in accordance with Practice E 527 and SAE J1086 published jointly by ASTM and SAE. See ASTM DS-
56C, available from ASTM Headquarters.
B
Maximum unless otherwise indicated.
C
Except as required for specific alloy type, molybdenum, titanium, nickel, cobalt, tantalum, nitrogen, and copper need not be reported but
shall not be present in other than residual amounts; the intent being to prohibit substitution of one alloy type for another due to absence
of control of the above named elements in certain alloys.
D
American Welding Society designation.
E
See Supplementary Requirement S1.
F
Nitrogen content is to be reported for this grade.
G
%Cr + 3.3 ⴛ %Mo + 16 ⴛ %N ≥ 40.
H
Product analysis tolerance over the maximum limit for carbon and nitrogen to be 0.002%.
I
Wrought version of CA6NM.

872

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 PART A — FERROUS MATERIAL SPECIFICATIONS SA-479 /SA-479M

TABLE 2
MECHANICAL PROPERTY REQUIREMENTS
Tensile Yield Elongation
Strength, Strength,A in 2 in. Reduction Brinell
min, min, ksi [50 mm] or of Area, Hardness,
UNS Designation Type Condition ksi [MPa] [MPa] 4D, min, % min, %B max

Austenitic Grades
N08367 ... annealed 95 [655] 45 [310] 30 ... 241
S20161 ... annealed 125 [860] 50 [345] 40 40 311
S20910 XM-19 annealed 100 [690] 55 [380] 35 55 293
Up to 2 in. (50.8 mm), hot-rolled 135 [930] 105 [725] 20 50 ...
incl
Over 2 to 3 in. (50.8 to hot-rolled 115 [795] 75 [515] 25 50 ...
76.2 mm), incl
Over 3 to 8 in. (76.2 to hot-rolled 100 [690] 60 [415] 30 50 ...
203.2 mm), incl
Up to 11⁄2 in. (38.1 mm), strain- 145 [1000] 125 [860] 12 40 ...
incl hardened
Over 11⁄2 to 21⁄4 in. (38.1 strain- 120 [825] 105 [725] 15 45 ...
to 57.2 mm), incl hardened
S21600, S21603 XM-17, XM-18 annealed 90 [620] 50 [345] 40 50 212
S21800 ... annealed 95 [655] 50 [345] 35 55 241
S21904 XM-11 annealed 90 [620] 50 [345] 45 60 ...
S24000 XM-29 annealed 100 [690] 55 [380] 30 50 ...
S30200, S30400, 302, 304, 304H, 304LN, annealed 75 [515]D 30 [205] 30 40 ...
S30409, S30453, ER308,C 309S, 309H,
S30880, S30908, 309Cb, 310S, 310H,
S30909, S30940, 310Cb, 316, 316H, 316Ti,
S31008, S31009, 316Cb, 316LN, 317, 321,
S31040, S31600, 321H, 347, 347H, 348,
S31609, S31635, 348H
S31640, S31653,
S31700, S32100,
S32109, S34700,
S34709, S34800,
S34809
316 strain- 85 [585] 65 [450]E 30 60 ...
hardened
level 1
2 in. and under strain- 95 [655] 75 [515] 25 40 ...
hardened
level 2
Over 2 to 21⁄2 in. (50.8 to strain- 90 [620] 65 [450] 30 40 ...
63.5 mm), incl hardened
level 2
Over 21⁄2 to 3 in. (63.5 to strain- 80 [550] 55 [380] 30 40 ...
76.2 mm), incl hardened
level 2
S30403, S31603 304L, 316L annealed 70 [485] 25 [170] 30 40 ...
S30451, S31651 304N, 316N annealed 80 [550] 35 [240] 30 40 ...
S30600 ... annealed 78 [540] 35 [240] 40 ... ...
S30815 ... annealed 87 [600] 45 [310] 40 50 ...
S31254 ... annealed 95 [655] 44 [305] 35 50 ...
S31725 ... annealed 75 [515] 30 [205] 40 ... ...
S31726 ... annealed 80 [550] 35 [240] 40 ... ...
S32050 ... annealed 98 [675] 48 [330] 40 ... ...
S32615 ... annealed 80 [550] 32 [220] 25 40 ...
S33228 ... annealed 73 [500] 27 [185] 30 ... ...
S34565 ... annealed 115 [795] 60 [415] 35 40 230
S35315 ... annealed 94 [650] 39 [270] 40 ... ...

873

--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 SA-479 /SA-479M 2004 SECTION II

TABLE 2
MECHANICAL PROPERTY REQUIREMENTS (CONT’D)
Tensile Yield Elongation
Strength, Strength,A in 2 in. Reduction Brinell
min, min, ksi [50 mm] or of Area, Hardness,
UNS Designation Type Condition ksi [MPa] [MPa] 4D, min, % min, %B max

Austenitic-Ferritic Grades
S31803 ... annealed 90 [620] 65 [450] 25 ... 290
S32205 ... annealed 90 [620] 65 [450] 25 ... 290
S32550 ... annealed 110 [760] 80 [550] 15 ... 297
S32750 2 in. and under annealed 116 [800]F 80 [550]F 15 ... 310
over 2 in. annealed 110 [760] 75 [515] 15 ... 310
S32760 ... annealed 109 [750] 80 [550] 25 ... 300
S32906 ... annealed 109 [750] 80 [550] 25 ... 310
S32950 ... annealed 100 [690] 70 [485] 15 ... 297
S39277 ... annealed 118 [820] 85 [585] 25 50 293
Ferritic Grades
S40500 405 annealed 60 [415] 25 [170] 20 45 207
S43000, S43035 430, 439 annealed 70 [485] 40 [275] 20G 45G 192
S44627 XM-27 annealed 65 [450] 40 [275] ... 45G 217
S44401 ... annealed 60 [415] 45 [310] 20H 45H 217
S44700 ... annealed 70 [485] 55 [380] 20 40 ...
S44800 ... annealed 70 [485] 55 [380] 20 40 ...
Martensitic Grades
S40300, S41000 403, 410 annealed 70 [485] 40 [275] 20D 45D 223
1 70 [485] 40 [275] 20D 45D 223
2 110 [760] 85 [585] 15 45 269
3 130 [895] 100 [690] 12 35 331
S41400 414 tempered 115 [795] 90 [620] 15 45 321
S41425 ... tempered 120 [825] 95 [655] 15 45 321
S41500 ... normalized 115 [795] 90 [620] 15 45 293
and
tempered
S43100 431I annealed ... ... ... ... 277
tempered 115 [795] 90 [620] 15 45 321
S41040 XM-30 annealed 70 [485] 40 [275] 13G 45G 235
quenched and 125 [860] 100 [690] 13 45 302
tempered
A
See Section 7.
B
Reduction of area does not apply on flat bars 3⁄16 in. [4.80 mm] and under in thickness as this determination is not generally made in this
product size.
C
American Welding Society designation.
D
Tensile strength 70 ksi [485 MPa] min permitted for extruded shapes.
E
For bars greater than 2 in. [51 mm], a cross section, 60 ksi [415 MPa] min, shall be permitted.
F
For sections over 2 in. [50 mm] in thickness, the minimum tensile strength shall be 106 ksi [730 MPa]; the minimum yield strength shall
be 75 ksi [515 MPa].
G
Elongation in 2 in. or 50 mm of 12% min and reduction of area of 35% min permitted for cold-finished bars.
H
Elongation in 2 in. of 12% min and reduction of area of 35% min permitted for cold-drawn or cold-rolled bars.
I
Annealed bars shall be capable of meeting the tempered condition requirements when heat treated in accordance with 4.4.3.

874
--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 PART A — FERROUS MATERIAL SPECIFICATIONS SA-479 /SA-479M

TABLE 3
RESPONSE TO HEAT TREATMENT

Heat Treatment
TemperatureB Hardness
TypeA °F (°C), min Quenchant HRC, min

403 1750 [955] Air 35

410 1750 [955] Air 35
414 1750 [955] Oil 42
A
Samples for testing shall be in the form of a section not
exceeding 3⁄8 in. [9.50 mm] in thickness.
B
Temperature tolerance is +25°F [15°C].
--`,,```,,,,````-`-`,,`,,`,`,,`---

875

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 SA-479 /SA-479M 2004 SECTION II

SUPPLEMENTARY REQUIREMENTS

The following may be made requirements when the purchaser specifies them to be appli-
cable.

S1. Materials for High-Temperature Service S3. Product Analysis

S1.1 Unless an H grade has been ordered, this supple- S3.1 An analysis shall be made by the manufacturer
mentary requirement shall be specified for ASME Code on a sample from one bar in each lot as defined in Specifi-
applications for service above 1000°F [540°C]. cation A 484 / A 484M. The analysis shall meet the
requirements of Table 1. In the event of failure, the lot
S1.2 The user is permitted to use an austenitic stain- represented shall be rejected except that, at the option of
less steel as the corresponding H grade when the material the manufacturer, each bar in the lot may be tested for
meets all requirements of the H grade including chemis- acceptance. Product analysis tolerance provisions do not
try, annealing temperature, and grain size (see Section 7). apply.
S1.3 The user is permitted to use an L grade austenitic
stainless steel for service above 1000°F [540°C], subject
S4. Material for High Cycle Fatigue Service
to the applicable allowable stress table of the ASME
Code, when the material meets all requirements of this S4.1 The mechanical properties of bars furnished in
specification and the grain size is ASTM No. 7 or coarser lengths under 20 ft [6 m] shall be determined by testing
as determined in accordance with Test Method E 112. one end of each bar. Bars furnished in lengths of 20 ft
The grain size shall be reported on a Certified Test Report. [6 m] and over shall be tested at each end.

S5. Material for Optimum Resistance to Stress

S2. Corrosion Tests Corrosion Cracking
S2.1 Intergranular corrosion tests shall be performed S5.1 This supplementary requirement is to be refer-
by the manufacturer on sensitized specimens of Types enced when austenitic stainless steels are to be purchased
304L, 316L, 321, 347, and 348; and for the other austen- in accordance with 4.1.1 with solution-annealing as the
itic grades, on specimens representative of the as-shipped final operation and with no subsequent cold drawing per-
condition. All austenitic stainless steels shall be capable mitted. Straightening is permitted as a final operation
of passing intergranular corrosion tests in the as-shipped to meet the straightness requirements of Specification
condition. Tests shall be performed in accordance with A 484/A 484M unless specifically prohibited by the pur-
Practice E of Practices A 262. chaser.

876

--`,,```,,,,````-`-`,,`,,`,`,,`---

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 PART A — FERROUS MATERIAL SPECIFICATIONS SA-479 /SA-479M

APPENDIX

(Nonmandatory Information)

X1. RATIONALE REGARDING DEFINITION X1.2 For Boiler Code applications involving tempera-
OF SOLUTION ANNEALING IN 4.1.1 tures where optimum resistance to creep is desired, the
larger grain size of material solution annealed by reheat-
X1.1 It is generally recognized that austenitic stainless
ing is generally desired. For that reason a minimum grain
steels are solution annealed by heating to a temperature
size has been required of the H grades (created for opti-
that dissolves (takes into solution) chromium carbides
mum elevated temperature properties) and a mandatory
and quenching rapidly so that the chromium carbides will
grain size test and report has been added for the non-H
not participate in the grain boundaries which could cause
grades so that the information is available for those desir-
susceptibility to intergranular corrosion in a critically
ing to reclassify a non-H grade to H grade.
corrosive environment. Thus, solution annealing also can
be accomplished for non-stabilized grades by taking X1.3 To satisfy the concerns of inadvertent assign-
advantage of hot rolling temperatures (which always ment of fine grained material to elevated temperature
exceed solution annealing temperature requirements), applications, special marking has been added for material
maintaining hot rolling finishing temperatures well above which meets the requirements of Supplementary Require-
minimum solution annealing requirements, and immedi- ment S1.
ately quenching integral with hot rolling. Stabilized X1.4 A mandatory test for susceptibility to intergranu-
grades (with columbium or titanium added) cannot be lar corrosion has been added for material solution
handled this way since they would become destabilized annealed by the alternative method [see (2) in 4.1.1] so
due to columbium or titanium carbide solution, without that a history of data can be accumulated, as has been done
--`,,```,,,,````-`-`,,`,,`,`,,`---

subsequent reheating. in the past for material solution annealed by reheating.

877

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale
 878

Copyright ASME International

Provided by IHS under license with ASME
No reproduction or networking permitted without license from IHS Not for Resale