Stainless Steel Bars and Shapes: Standard Specification For
Stainless Steel Bars and Shapes: Standard Specification For
Stainless Steel Bars and Shapes: Standard Specification For
for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1. Scope* A314 Specification for Stainless Steel Billets and Bars for
1.1 This specification covers hot-finished or cold-finished Forging
bars except bars for reforging (Note 1). It includes rounds, A370 Test Methods and Definitions for Mechanical Testing
squares, and hexagons, and hot-rolled or extruded shapes, such of Steel Products
as angles, tees, and channels in the more commonly used types A484/A484M Specification for General Requirements for
of stainless steels. The free-machining types (Note 2) for Stainless Steel Bars, Billets, Shapes, and Forgings
general corrosion resistance and high-temperature service are A582/A582M Specification for Free-Machining Stainless
covered in a separate specification. Steel Bars
A751 Test Methods and Practices for Chemical Analysis of
NOTE 1—For bars for reforging, see Specification A314. Steel Products
NOTE 2—For free-machining stainless bars designed especially for
A1058 Test Methods for Mechanical Testing of Steel
optimum machinability, see Specification A582/A582M.
NOTE 3—There are standards covering high nickel, chromium, auste- Products—Metric
nitic corrosion, and heat-resisting alloy materials. These standards are E527 Practice for Numbering Metals and Alloys in the
under the jurisdiction of ASTM Subcommittee B02.07 and may be found Unified Numbering System (UNS)
in Annual Book of ASTM Standards, Vol. 02.04.
2.2 SAE Document:3
1.2 The values stated in either SI units or inch-pound units SAE J 1086 Recommended Practice for Numbering Metals
are to be regarded separately as standard. Within the text, the and Alloys
SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system 3. Ordering Information
shall be used independently of the other. Combining values 3.1 It is the responsibility of the purchaser to specify all
from the two systems may result in non-conformance with the requirements that are necessary for material ordered under this
standard. The inch-pound units shall apply unless the “M” specification. Such requirements may include but are not
designation of this specification is specified in the order. limited to the following:
1.3 This international standard was developed in accor- 3.1.1 Quantity (weight or number of pieces),
dance with internationally recognized principles on standard- 3.1.2 Name of material: stainless steel,
ization established in the Decision on Principles for the 3.1.3 Form (bars, angles, and so forth),
Development of International Standards, Guides and Recom- 3.1.4 Condition (subsection 4.1),
mendations issued by the World Trade Organization Technical 3.1.5 Finish (Section 8 of Specification A484/A484M),
Barriers to Trade (TBT) Committee. 3.1.6 Surface preparation of shapes (Section 8 of Specifica-
tion A484/A484M),
2. Referenced Documents 3.1.7 Applicable dimensions including size, thickness,
2.1 ASTM Standards:2 width, and length, l,
3.1.8 Cross section (round, square, and so forth),
3.1.9 Type or UNS designation (Table 1),
1
3.1.10 ASTM designation and date of issue, and
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
3.1.11 Whether bars are to be rolled as bars or cut from strip
A01.17 on Flat-Rolled and Wrought Stainless Steel. or plate.
Current edition approved Feb. 1, 2024. Published February 2024. Originally 3.1.12 Test for magnetic permeability when specified by
approved in 1944. Last previous edition approved in 2024 as A276/A276M – 24. customer purchase order when ordering Types 201 and 205.
DOI: 10.1520/A0276_A0276M-24A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from Society of Automotive Engineers (SAE), 400 Commonwealth
the ASTM website. Dr., Warrendale, PA 15096-0001, http://www.sae.org.
Composition, %
UNS
Designa- Type
tionB
Carbon Manganese Phos- Sulfur Silicon Chromium Nickel Molyb- Nitrogen Other
phorus denum ElementsL
Austenitic Grades
N08020 Alloy 20 0.07 2.00 0.045 0.035 1.00 19.0–21.0 32.0–38.0 2.00–3.00 ... Cu 3.0–4.0
Nb 8 × C
min.; 1.00
max
N08367 ... 0.030 2.00 0.040 0.030 1.00 20.0–22.0 23.5–25.5 6.0–7.0 0.18–0.25 Cu 0.75
N08700 ... 0.04 2.00 0.040 0.030 1.00 19.0–23.0 24.0–26.0 4.3–5.0 ... Cu 0.50
Cb 8 × C
min
0.40 max
N08800 800 0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 ... ... FeJ 39.5
min.
Cu 0.75
Al
0.15–0.60
Ti
0.15–0.60
N08810 800H 0.05–0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 ... ... FeJ 39.5
min.
Cu 0.75
Al
0.15–0.60
Ti
0.15–0.60
N08811 ... 0.06–0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 ... ... FeJ 39.5
min.
Cu 0.75
AlK
0.25–0.60
TiK
0.25–0.60
N08904 904L 0.020 2.00 0.045 0.035 1.00 19.0–23.0 23.0–28.0 4.0–5.0 0.10 Cu 1.0–2.0
N08925 ... 0.020 1.00 0.045 0.030 0.50 19.0–21.0 24.0–26.0 6.0–7.0 0.10–0.20 Cu
0.80–1.50
N08926 ... 0.020 2.00 0.030 0.015 0.50 19.0–21.0 24.0–26.0 6.0–7.0 0.15–0.25 Cu
0.50–1.50
S20100 201 0.15 5.5–7.5 0.060 0.030 1.00 16.0–18.0 3.5–5.5 ... 0.25 ...
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 ...
S20162 ... 0.15 4.0–8.0 0.040 0.040 2.5–4.5 16.5–21.0 6.0–10.0 0.50–2.50 0.05–0.25 ...
S20200 202 0.15 7.5–10.0 0.060 0.030 1.00 17.0–19.0 4.0–6.0 ... 0.25 ...
S20500 205 0.12–0.25 14.0–15.5 0.060 0.030 1.00 16.5–18.0 1.0–1.7 ... 0.32–0.40 ...
S20910 XM-19 0.06 4.0–6.0 0.045 0.030 1.00 20.5–23.5 11.5–13.5 1.50–3.00 0.20–0.40 Cb
0.10–0.30,
V
0.10–0.30
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 ...
S21900 XM-10 0.08 8.0–10.0 0.045 0.030 1.00 19.0–21.5 5.5–7.5 ... 0.15–0.40 ...
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 ...
S24100 XM-28 0.15 11.0–14.0 0.045 0.030 1.00 16.5–19.0 0.50–2.50 ... 0.20–0.45 ...
S28200 ... 0.15 17.0–19.0 0.045 0.030 1.00 17.0–19.0 ... 0.75–1.25 0.40–0.60 Cu
0.75–1.25
S30200 302 0.15 2.00 0.045 0.030 1.00 17.0–19.0 8.0–10.0 ... 0.10 ...
S30215 302B 0.15 2.00 0.045 0.030 2.00–3.00 17.0–19.0 8.0–10.0 ... 0.10 ...
S30400 304 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... ... ...
S30403 304LC 0.030 2.00 0.045 0.030 1.00 18.0–20.0 8.0–12.0 ... ... ...
S30451 304N 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... 0.10–0.16 ...
S30452 XM-21 0.08 2.00 0.045 0.030 1.00 18.0–20.0 8.0–10.0 ... 0.16–0.30 ...
S30453 304LN 0.030 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... 0.10–0.16 ...
S30454 ... 0.03 2.00 0.045 0.030 1.00 18.0–20.0 8.0–11.0 ... 0.16–0.30 ...
S30500 305 0.12 2.00 0.045 0.030 1.00 17.0–19.0 11.0–13.0 ... ... ...
S30800 308 0.08 2.00 0.045 0.030 1.00 19.0–21.0 10.0–12.0 ... ... ...
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
S30900 309 0.20 2.00 0.045 0.030 1.00 22.0–24.0 12.0–15.0 ... ... ...
S30908 309S 0.08 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 ... ... Cb 10×C-
1.10
S31000 310 0.25 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 ... ... ...
Composition, %
UNS
Designa- Type
tionB
Carbon Manganese Phos- Sulfur Silicon Chromium Nickel Molyb- Nitrogen Other
phorus denum ElementsL
S31008 310S 0.08 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 ... ... ...
S31010D ... 0.030 5.50–6.50 0.030 0.0010 0.25–0.75 28.5–30.5 14.0–16.0 1.5–2.5 0.80–0.90 Al 0.05
B 0.005
S31040 310Cb 0.08 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 ... ... Cb 10×C-
1.10
S31051 ... 0.07 5.0–7.0 0.045 0.01 0.5 22.5–25.5 13.0–15.5 2.8–3.8 0.45–0.60 ...
S31052N ... 0.04 5.0–7.0 0.045 0.01 0.5 26.4–28.4 13.0–15.5 2.8–3.8 0.60–0.80 ...
S31254 ... 0.020 1.00 0.030 0.010 0.80 19.5–20.5 17.5–18.5 6.0–6.5 0.18–0.25 Cu
0.50–1.00
S31266 ... 0.030 2.00–4.00 0.035 0.020 1.00 23.0–25.0 21.0–24.0 5.2–6.2 0.35–0.60 Cu
1.00–2.50
W
1.50–2.50
S31400 314 0.25 2.00 0.045 0.030 1.50–3.00 23.0–26.0 19.0–22.0 ... ... ...
S31600 316 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 ... ...
S31603 316LC 0.030 2.00 0.045 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 2.00–3.00 0.10 Ti
5×(C+N)-
0.70
S31640 316Cb 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 0.10 Cb 10×C-
1.10
S31651 316N 0.08 2.00 0.045 0.030 1.00 16.0–18.0 10.0–14.0 2.00–3.00 0.10–0.16 ...
S31653 316LN 0.030 2.00 0.045 0.030 1.00 16.0–18.0 10.0–13.0 2.00–3.00 0.10–0.16 ...
S31654 ... 0.03 2.00 0.045 0.030 1.00 16.0–18.0 10.0–13.0 2.00–3.00 0.16–0.30 ...
S31700 317 0.08 2.00 0.045 0.030 1.00 18.0–20.0 11.0–15.0 3.0–4.0 0.10 ...
S31725 ... 0.030 2.00 0.045 0.030 1.00 18.0–20.0 13.5–17.5 4.0–5.0 0.20 ...
S31726 ... 0.030 2.00 0.045 0.030 1.00 17.0–20.0 14.5–17.5 4.0–5.0 0.10–0.20 ...
S31727 ... 0.030 1.00 0.030 0.030 1.00 17.5–19.0 14.5–16.5 3.8–4.5 0.15–0.21 Cu 2.8–4.0
S31730 ... 0.030 2.00 0.040 0.010 1.00 17.0–19.0 15.0–16.5 3.0–4.0 0.045 Cu 4.0-5.0
S32053 ... 0.030 1.00 0.030 0.010 1.00 22.0–24.0 24.0–26.0 5.0–6.0 0.17–0.22 ...
S32100 321 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 ... ... Ti
5×(C+N)-
0.70E
S32654 ... 0.020 2.0–4.0 0.030 0.005 0.50 24.0–25.0 21.0–23.0 7.0–8.0 0.45–0.55 Cu
0.30–0.60
S34565 ... 0.030 5.0–7.0 0.030 0.010 1.00 23.0–25.0 16.0–18.0 4.0–5.0 0.40–0.60 Cb 0.10
S34700 347 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 ... ... Cb
10×C–1.10
S34800 348 0.08 2.00 0.045 0.030 1.00 17.0–19.0 9.0–12.0 ... ... Cb
10×C–1.10,
Ta 0.10
Co 0.20
S35130 ... 0.04 1.5–3.5 0.045 0.01 0.5 26.5–28.0 29.5–31.3 3.0–4.0 0.25–0.35 ...
Austenitic-Ferritic Grades
S31100 XM-26 0.06 1.00 0.045 0.030 1.00 25.0–27.0 6.0–7.0 ... ... Ti 0.25
S31803 ... 0.030 2.00 0.030 0.020 1.00 21.0–23.0 4.5–6.5 2.5–3.5 0.08–0.20 ...
S32101 ... 0.040 4.0–6.0 0.040 0.030 1.00 21.0–22.0 1.35–1.70 0.10–0.80 0.20–0.25 Cu
0.10–0.80
S32202 ... 0.030 2.00 0.040 0.010 1.00 21.5–24.0 1.00–2.80 0.45 0.18–0.26 ...
S32205 ... 0.030 2.00 0.030 0.020 1.00 22.0–23.0 4.5–6.5 3.0–3.5 0.14–0.20 ...
S32304 ... 0.030 2.50 0.040 0.030 1.00 21.5–24.5 3.0–5.5 0.05–0.60 0.05–0.20 Cu
0.05–0.60
S32506 ... 0.030 1.00 0.040 0.015 0.90 24.0–26.0 5.5–7.2 3.0–3.5 0.08–0.20 W
0.05–0.30
S32550 ... 0.04 1.50 0.040 0.030 1.0 24.0–27.0 4.5–6.5 2.9–3.9 0.10–0.25 Cu
1.50–2.50
M
S32750 ... 0.030 1.20 0.035 0.020 0.80 24.0–26.0 6.0–8.0 3.0–5.0 0.24–0.32 Cu 0.50
S32760F ... 0.030 1.00 0.030 0.010 1.00 24.0–26.0 6.0–8.0 3.0–4.0 0.20–0.30 Cu
0.50–1.00
W
0.50–1.00
S82441 ... 0.030 2.5–4.0 0.035 0.005 0.070 23.0–25.0 3.0–4.5 1.00–2.00 0.20–0.30 Cu
0.10–0.80
Ferritic Grades
S40500 405 0.08 1.00 0.040 0.030 1.00 11.5–14.5 0.50 ... ... Al
0.10–0.30
Composition, %
UNS
Designa- Type
tionB
Carbon Manganese Phos- Sulfur Silicon Chromium Nickel Molyb- Nitrogen Other
phorus denum ElementsL
S40976 ... 0.030 1.00 0.040 0.030 1.00 10.5–11.7 0.75–1.00 ... 0.040 Cb
10×(C+N)-
0.80
S42900 429 0.12 1.00 0.040 0.030 1.00 14.0–16.0 ... ... ... ...
S43000 430 0.12 1.00 0.040 0.030 1.00 16.0–18.0 ... ... ... ...
S44400 444 0.025 1.00 0.040 0.030 1.00 17.5–19.5 1.00 1.75–2.50 0.035 Ti+Cb
0.20+4 ×
(C+N)-
0.80
S44600 446 0.20 1.50 0.040 0.030 1.00 23.0–27.0 0.75 ... 0.25 ...
S44627 XM-27G 0.010H 0.40 0.020 0.020 0.40 25.0–27.5 0.50 0.75–1.50 0.015H Cu 0.20
Cb
0.05–0.20
S44700 ... 0.010 0.30 0.025 0.020 0.20 28.0–30.0 0.15 3.5–4.2 0.020 C+N 0.025
Cu 0.15
S44800 ... 0.010 0.30 0.025 0.020 0.20 28.0–30.0 2.00–2.50 3.5–4.2 0.020 C+N 0.025
Cu 0.15
Martensitic Grades
S40300 403 0.15 1.00 0.040 0.030 0.50 11.5–13.0 ... ... ... ...
S41000 410 0.08–0.15 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 11.0–13.0 ... ... ... 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 1.50–2.00 0.06–0.12 Cu 0.30
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 ... ...
S42000 420 0.15 min 1.00 0.040 0.030 1.00 12.0–14.0 ... ... ... ...
S42010 ... 0.15–0.30 1.00 0.040 0.030 1.00 13.5–15.0 0.35–0.85 0.40–0.85 ... ...
S43100 431 0.20 1.00 0.040 0.030 1.00 15.0–17.0 1.25–2.50 ... ... ...
S44002 440A 0.60–0.75 1.00 0.040 0.030 1.00 16.0–18.0 ... 0.75 ... ...
S44003 440B 0.75–0.95 1.00 0.040 0.030 1.00 16.0–18.0 ... 0.75 ... ...
S44004 440C 0.95–1.20 1.00 0.040 0.030 1.00 16.0–18.0 ... 0.75 ... ...
S44026 ... 0.45–0.55 1.00 0.040 0.030 1.00 14.0–16.0 ... 0.50–0.80 0.15 V
0.10–0.20
A
Maximum, unless range or minimum is indicated. Where ellipses (. . .) appear in this table, there is no requirement and the element need not be determined or reported.
B
Designations established in accordance with Practice E527 and SAE J 1086.
C
For some applications, the substitution of Type 304L for Type 304, or Type 316L for Type 316 may be undesirable because of design, fabrication, or service requirements.
In such cases, the purchaser should so indicate on the order.
D
UNS S31010 is a highly alloyed austenitic stainless steel type 3b as defined in NACE MR0175/ISO 15156-3.
E
Nitrogen content is to be reported for this grade.
F
% Cr + 3.3 × % Mo + 16 × % N $ 40.
G
Nickel plus copper shall be 0.50 % max.
H
Product analysis tolerance over the maximum limit for carbon and nitrogen shall be 0.002 %.
I
Wrought version of CA 6NM.
J
Iron shall be determined arithmetically by difference of 100 minus the sum of specified elements.
K
(Al + Ti) = 0.85 - 1.20.
L
The terms Columbium (Cb) and Niobium (Nb) both relate to the same element.
M
% Cr + 3.3 × % Mo + 16 × % N $ 41.
N
% Cr + 3.3 × % Mo + 16 × % N $ 48.
3.1.13 Choice of testing track from the options listed in Test 3.1.14 Supplementary requirements, and
Methods A1058 when material is ordered to an M suffix (SI 3.1.15 Additional requirements.
units) product standard. If the choice of test track is not
specified in the order, then the default ASTM track shall be
used as noted in Test Methods A1058.
SUMMARY OF CHANGES
Committee A01 has identified the location of selected changes to this standard since the last issue
(A276/A276M – 24) that may impact the use of this standard. (Approved Feb. 1, 2024.)
Committee A01 has identified the location of selected changes to this standard since the last issue
(A276/A276M – 23) that may impact the use of this standard. (Approved Jan. 1, 2024.)
Committee A01 has identified the location of selected changes to this standard since the last issue
(A276/A276M – 17) that may impact the use of this standard. (Approved Aug. 1, 2023.)
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