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Designation: A314 − 08

Standard Specification for

Stainless Steel Billets and Bars for Forging1
This standard is issued under the fixed designation A314; 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* 3.1.9 Marking (see Specification A484/A484M), and

1.1 This specification covers stainless steel billets and bars 3.1.10 Exceptions to the specification or special require-
intended only for forging. ments.
3.2 If possible, the intended use of the item should be given
2. Referenced Documents on the purchase order especially when the item is ordered for
2.1 ASTM Standards:2 a specific end use or uses.
A484/A484M Specification for General Requirements for NOTE 1—A typical ordering description is as follows: 10 000 lb, Type
Stainless Steel Bars, Billets, and Forgings 420, annealed, round-cornered square billets, ASTM A314 dated
A751 Test Methods, Practices, and Terminology for Chemi- for valve parts.
cal Analysis of Steel Products
4. Manufacture
E527 Practice for Numbering Metals and Alloys in the
Unified Numbering System (UNS) 4.1 Annealing—Blooms and billets of the 400 series of
2.2 Other Document: stainless steel types which are highly hardenable, such as Types
SAE J1086 Recommended Practice for Numbering Metals 414, 420, 431, 440A, 440B, and 440C, are commonly annealed
and Alloys3 prior to shipment and so specified in order to avoid the
possibility of thermal cracking. Those grades are not normally
3. Ordering Information furnished in the as-rolled or as-forged condition. Other hard-
3.1 It is the responsibility of the purchaser to specify all enable grades, such as Types 403, 410, 416, and 416 Se, which
requirements that are necessary for material ordered under this may also require annealing, depending on their composition
specification. Such requirements may include but are not and size, are furnished suitable for cold cutting when so
limited to the following: specified on the purchase order.
3.1.1 Quantity (weight or number of pieces), 4.2 Conditioning—Material may be conditioned by chip-
3.1.2 Name of material: type or UNS designation (Table 1), ping or grinding to remove injurious surface defects provided
3.1.3 Condition, the depth of conditioning does not exceed that which will affect
3.1.4 Cross section (round, round-cornered square, etc.), the surface condition or dimensions of the article to be forged
3.1.5 Form: bar or forging billet, from the bar or billet.
3.1.6 Applicable dimensions, including size, thickness,
width, and length, 5. Chemical Composition
3.1.7 ASTM designation and date of issue, 5.1 The steel shall conform to the chemical composition
3.1.8 Preparation for delivery (see Specification A484/ prescribed in Table 1 for the respective grades.
A484M), 5.2 Methods and practices relating to chemical analysis
required by this specification shall be in accordance with Test
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Methods, Practices, and Terminology A751.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.17 on Flat-Rolled and Wrought Stainless Steel. 6. Dimensions
Current edition approved Oct. 1, 2008. Published October 2008. Originally 6.1 Billets and bars shall conform to the shape and dimen-
approved in 1947. Last previous edition approved in 2002 as A314 – 97 (2002).
DOI: 10.1520/A0314-08. sions specified by the purchaser within a permissible variation
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or of 65 %.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on 7. General Requirements
the ASTM website.
3
Available from Society of Automotive Engineers (SAE), 400 Commonwealth 7.1 In addition to the requirements of this specification, all
Dr., Warrendale, PA 15096-0001, http://www.sae.org. requirements of the current edition of Specification A484/

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

Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States

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A314 − 08
TABLE 1 Chemical Requirements
UNS Chemical Composition, %B
Type
Desig- Man- Phos- Molyb- Other
Number Carbon Sulfur Silicon Chromium Nickel Nitrogen
nationA ganese phorus denum Elements
Austenitic Grades
S20161 ... 0.15 4.00–6.00 0.040 0.040 3.00–4.00 15.00–18.00 4.00–6.00 ... 0.08–0.20 ...
S20200 202 0.15 7.50–10.00 0.060 0.030 1.00 17.00–19.00 4.00–6.00 ... 0.25 ...
S20910 XM-19 0.06 4.00–6.00 0.040 0.030 1.00 20.50–23.50 11.50–13.50 1.50–3.00 0.20–0.40 Cb 0.10–0.30
V 0.10–0.30
S21800 ... 0.10 7.00–9.00 0.060 0.030 3.50–4.50 16.00–18.00 8.00–9.00 ... 0.08–0.18 ...
S21900 XM-10 0.08 8.00–10.00 0.060 0.030 1.00 19.00–21.50 5.50–7.50 ... 0.15–0.40 ...
S21904 XM-11 0.04 8.00–10.00 0.060 0.030 1.00 19.00–21.50 5.50–7.50 ... 0.15–0.40 ...
S24000 XM-29 0.08 11.50–14.50 0.060 0.030 1.00 17.00–19.00 2.25–3.75 ... 0.20–0.40 ...
S24100 XM-28 0.15 11.00–14.00 0.060 0.030 1.00 16.50–19.00 0.50–2.25 ... 0.20–0.45 ...
S28200 ... 0.15 17.00–19.00 0.045 0.030 1.00 17.00–19.00 ... 0.75–1.25 0.40–0.60 ...
S30200 302 0.15 2.00 0.045 0.030 1.00 17.00–19.00 8.00–10.00 ... 0.10 ...
S30215 302B 0.15 2.00 0.045 0.030 2.00–3.00 17.00–19.00 8.00–10.00 ... ... ...
S30300 303 0.15 2.00 0.20 0.15 min 1.00 17.00–19.00 8.00–10.00 ... ... ...
S30323 303Se 0.15 2.00 0.20 0.06 1.00 17.00–19.00 8.00–10.00 ... ... Se 0.15 min
S30400 304 0.08 2.00 0.045 0.030 1.00 18.00–20.00 8.00–10.50 ... 0.10 ...
S30403 304L 0.030 2.00 0.045 0.030 1.00 18.00–20.00 8.00–12.00 ... 0.10 ...
S30500 305 0.12 2.00 0.045 0.030 1.00 17.00–19.00 10.50–13.00 ... ... ...
S30800 308 0.08 2.00 0.045 0.030 1.00 19.00–21.00 10.00–12.00 ... ... ...
S30900 309 0.20 2.00 0.045 0.030 1.00 22.00–24.00 12.00–15.00 ... ... ...
S30908 309S 0.08 2.00 0.045 0.030 1.00 22.00–24.00 12.00–15. . . ... ...
S30940 309Cb 0.08 2.00 0.045 0.030 1.00 22.00–24.00 12.00–16.00 ... ... Cb + Ta − 10 × C
S31000 310 0.25 2.00 0.045 0.030 1.50 24.00–26.00 19.00–22.00 ... ... ...
S31008 310S 0.08 2.00 0.045 0.030 1.50 24.00–26.00 19.00–22.00 ... ... ...
S31400 314 0.25 2.00 0.045 0.030 1.50–3.00 23.00–26.00 19.00–22.00 ... ... ...
S31600 316 0.08 2.00 0.045 0.030 1.00 16.00–18.00 10.00–14.00 2.00–3.00 0.10 ...
S31603 316L 0.030 2.00 0.045 0.030 1.00 16.00–18.00 10.00–14.00 2.00–3.00 0.10 ...
S31635 316Ti 0.08 2.00 0.045 0.030 1.00 16.00–18.00 10.00–14.00 2.00–3.00 ... Ti − 5 × (C+N)
min; 0.70
S31640 316Cb 0.08 2.00 0.045 0.030 1.00 16.00–18.00 10.00–14.00 2.00–3.00 ... Cb + Ta − 10 ×
C min; 1.10
S31700 317 0.08 2.00 0.045 0.030 1.00 18.00–20.00 11.00–15.00 3.00–4.00 0.10
S32100 321 0.08 2.00 0.045 0.030 1.00 17.00–19.00 9.00–12.00 ... ... Ti 5 × C min
S33228 ... 0.04–0.08 1.00 0.020 0.015 0.030 26.00–28.00 31.00–33.00 ... ... Cb 0.6–1.0
Ce 0.05–0.10
Al 0.025
S34700 347 0.08 2.00 0.045 0.030 1.00 17.00–19.00 9.00–13.00 ... ... Cb + Ta 10 × C
min
S34800 348 0.08 2.00 0.045 0.030 1.00 17.00–19.00 9.00–13.00 ... ... Cb + Ta 10 × C
min; Ta 0.10
S38031 ... 0.015 2.0 0.020 0.010 0.3 26.0–28.0 30.0–32.0 6.0–7.0 0.15–0.25 Cu 1.0–1.5
S38926 ... 0.020 2.00 0.03 0.01 0.5 19.00–21.00 24.00–26.00 6.0–7.0 0.15–0.25 Cu 0.5–1.5
Austenitic-Ferritic Grades
S32202 .. 0.030 2.00 0.030 0.010 1.00 21.50–24.00 1.00–2.80 0.45 0.18–0.26 ...
S32760C ... 0.030 1.00 0.030 0.010 1.00 24.00–26.00 6.00–8.00 3.00–4.00 0.20–0.30 Cu 0.50–1.00
W 0.50–1.00
S32950 ... 0.03 2.00 0.035 0.010 0.60 26.00–29.00 3.50–5.20 1.00–2.50 0.15–0.35 ...
Ferritic Grades
S42900 429 0.12 1.00 0.040 0.030 1.00 14.00–16.00 ... ... ... ...
S43000 430 0.12 1.00 0.040 0.030 1.00 16.00–18.00 ... ... ... ...
S43020 430F 0.12 1.25 0.06 0.15 min 1.00 16.00–18.00 ... 0.60D ... ...
S43023 430F Se 0.12 1.25 0.06 0.06 1.00 16.00–18.00 ... ... ... Se 0.15 min
S44600 446 0.20 1.50 0.040 0.030 1.00 23.00–27.00 ... ... 0.25 ...
S44625 XM-27E 0.010 0.40 0.020 0.020 0.40 25.00–27.50 0.50 0.75–1.50 0.015 ...
Martensitic Grades
S40300 403 0.15 1.00 0.040 0.030 0.50 11.50–13.00 ... ... ... ...
S41000 410 0.15 1.00 0.040 0.030 1.00 11.50–13.50 ... ... ... ...
S41400 414 0.15 1.00 0.040 0.030 1.00 11.50–13.50 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 1.50–2.00 0.06–0.12 Cu 0.30
S41600 416 0.15 1.25 0.06 0.15 min 1.00 12.00–14.00 ... 0.60D ... ...
S41623 416Se 0.15 1.25 0.06 0.06 1.00 12.00–14.00 ... ... ... Se 0.15 min
S42000 420 0.15 min 1.00 0.040 0.030 1.00 12.00–14.00 ... ... ... ...
S42010 ... 0.15–0.30 1.00 0.04 0.03 1.00 13.50–15.00 0.35–0.85 0.40–0.85 ... ...
S43100 431 0.20 1.00 0.040 0.030 1.00 15.00–17.00 1.25–2.50 ... ... ...
S44002 440A 0.60–0.75 1.00 0.040 0.030 1.00 16.00–18.00 ... 0.75 ... ...
S44003 440B 0.75–0.95 1.00 0.040 0.030 1.00 16.00–18.00 ... 0.75 ... ...
S44004 440C 0.95–1.20 1.00 0.040 0.030 1.00 16.00–18.00 ... 0.75 ... ...
S50100 501 0.10 min 1.00 0.040 0.030 1.00 4.00–6.00 ... 0.40–0.65 ... ...
S50200 502 0.10 1.00 0.040 0.030 1.00 4.00–6.00 ... 0.40–0.65 ... ...
A
New designation established in accordance with Practice E527 and SAE J1086.
B
Maximum unless otherwise indicated.
C
% Cr + 3.3 × % Mo + 16 × % N $ 40.
D
At the option of the manufacturer.

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A314 − 08
E
Nickel plus copper combined; 0.50 max. Product analysis tolerance over the maximum limit for carbon and nitrogen to be 0.002 %.

A484M shall apply. Failure to comply with the general requirements of Speci-
fication A484/A484M constitutes nonconformance with this specification.

8. Keywords
8.1 austenitic stainless steel; austenitic-ferritic duplex stain-
less steel; ferritic stainless steel; martensitic stainless steel;
stainless steel bars; stainless steel billets

SUMMARY OF CHANGES

Committee A01 has identified the location of selected changes to this standard since the last issue
(A314–97 (2002)) that may impact the use of this standard. (Approved Oct. 1, 2008.)

(1) New grade S32202 added to Table 1.

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