ASTM A276/A276M-24a

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: A276/A276M − 24 A276/A276M − 24a
Standard Specification for
Stainless Steel Bars and Shapes
This standard is issued under the fixed designation A276/A276M; 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 U.S. Department of Defense.
1. Scope*
1.1 This specification covers hot-finished or cold-finished bars except bars for reforging (Note 1). It includes rounds, squares, and
hexagons, and hot-rolled or extruded shapes, such as angles, tees, and channels in the more commonly used types of stainless
steels. The free-machining types (Note 2) for general corrosion resistance and high-temperature service are covered in a separate
specification.
NOTE 1—For bars for reforging, see Specification A314.
NOTE 2—For free-machining stainless bars designed especially for optimum machinability, see Specification A582/A582M.
NOTE 3—There are standards covering high nickel, chromium, austenitic corrosion, and heat-resisting alloy materials. These standards are under the
jurisdiction of ASTM Subcommittee B02.07 and may be found in Annual Book of ASTM Standards, Vol. 02.04.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems may result in non-conformance with the standard. The
inch-pound units shall apply unless the “M” designation of this specification is specified in the order.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A314 Specification for Stainless Steel Billets and Bars for Forging
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, Shapes, and Forgings
A582/A582M Specification for Free-Machining Stainless Steel Bars
A751 Test Methods and Practices for Chemical Analysis of Steel Products
A1058 Test Methods for Mechanical Testing of Steel Products—Metric
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.17
on Flat-Rolled and Wrought Stainless Steel.
Current edition approved Jan. 1, 2024Feb. 1, 2024. Published January 2024February 2024. Originally approved in 1944. Last previous edition approved in 20232024 as
A276/A276M – 23.A276/A276M – 24. DOI: 10.1520/A0276_A0276M-24.10.1520/A0276_A0276M-24A.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
A276/A276M − 24a
2.2 SAE Document:
SAE J 1086 Recommended Practice for Numbering Metals and Alloys
3. Ordering Information
3.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this
specification. Such requirements may include but are not limited to the following:
3.1.1 Quantity (weight or number of pieces),
3.1.2 Name of material: stainless steel,
3.1.3 Form (bars, angles, and so forth),
3.1.4 Condition (Section(subsection 4.1),
3.1.5 Finish (Section 8 of Specification A484/A484M),
3.1.6 Surface preparation of shapes (Section 8 of Specification A484/A484M),
3.1.7 Applicable dimensions including size, thickness, width, and length, l,
3.1.8 Cross section (round, square, and so forth),
3.1.9 Type or UNS designation (Table 1),
3.1.10 ASTM designation and date of issue, and
3.1.11 Whether bars are to be rolled as bars or cut from strip or plate.
3.1.12 Test for magnetic permeability when specified by customer purchase order when ordering Types 201 and 205.
3.1.13 Choice of testing track from the options listed in Test Methods A1058 when material is ordered to an M suffix (SI 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.
3.1.14 Supplementary requirements, and
3.1.15 Additional requirements.
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http://www.sae.org.
A276/A276M − 24a
A
TABLE 1 Chemical Requirements
Composition, %
UNS
Designa- Type
B
tion
Carbon Manganese Phos- Sulfur Silicon Chromium Nickel Molyb- Nitrogen Other
L
phorus denum Elements
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
J
N08800 800 0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 . . . . . . Fe 39.5
min.
Cu 0.75
Al
0.15–0.60
Ti
0.15–0.60
J
N08810 800H 0.05–0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 . . . . . . Fe 39.5
min.
Cu 0.75
Al
0.15–0.60
Ti
0.15–0.60
J
N08811 . . . 0.06–0.10 1.50 0.045 0.015 1.00 19.0–23.0 30.0–35.0 . . . . . . Fe 39.5
min.
Cu 0.75
K
Al
0.25–0.60
K
Ti
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 . . . . . . . . .
C
S30403 304L 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 . . . . . . . . .
A276/A276M − 24a
TABLE 1 Continued
Composition, %
UNS
Designa- Type
B
tion
Carbon Manganese Phos- Sulfur Silicon Chromium Nickel Molyb- Nitrogen Other
L
phorus denum Elements
S31008 310S 0.08 2.00 0.045 0.030 1.50 24.0–26.0 19.0–22.0 . . . . . . . . .
D
S31010 . . . 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 . . .
N
S31052 . . . 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 . . . . . .
C
S31603 316L 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)-
E
0.70
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
F
S32760 . . . 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
A276/A276M − 24a
TABLE 1 Continued
Composition, %
UNS
Designa- Type
B
tion
Carbon Manganese Phos- Sulfur Silicon Chromium Nickel Molyb- Nitrogen Other
L
phorus denum Elements
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 . . .
G H H
S44627 XM-27 0.010 0.40 0.020 0.020 0.40 25.0–27.5 0.50 0.75–1.50 0.015 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
...