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ASTM A240/A240M S30908 vs ASTM A276/A276M S30940

Strong Match — 94.1% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S30908 (ASTM A240/A240M:2025) and ASTM A276/A276M S30940 (ASTM A276/A276M:2017) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S30908 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A276/A276M S30940 is commonly used for stainless steel bars and shapes (hot-finished or cold-finished). ASTM A240/A240M S30908 is defined under ASTM International, originating from United States, while ASTM A276/A276M S30940 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S30908 vs ASTM A276/A276M S30940 is a 91.2% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 94.1%.

Frequently Compared With ASTM A240/A240M S30908:
IS 1570 (Part 7) 12Cr12MoVH GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28
Match Breakdown
CHEMISTRY MATCH
91.2%
MECHANICAL MATCH
100%
OVERALL
94.1%
Specifications
Property ASTM A240/A240M S30908 ASTM A276/A276M S30940
Standard ASTM A240/A240M:2025 ASTM A276/A276M:2017
Category Stainless Steel Stainless Steel
C (%) <=0.08 <=0.08
Mn (%) <=2.00 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=0.75 <=1.00
Cr (%) 22.0-24.0 22.0-24.0
Ni (%) 12.0-15.0 12.0-16.0
Nb (%) Not specified <=1.10
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A240/A240M S30908 ASTM A276/A276M S30940
Tensile Strength >=515 MPa >=515 MPa
Yield Strength >=205 MPa >=205 MPa
Elongation >=40% >=40%
Hardness <=217 HB Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Condition A (Annealed), hot-finished, all sizes (first row printed)
Typical Applications
ASTM A240/A240M S30908
Pressure vessels and general applications (plate, sheet and strip)
ASTM A276/A276M S30940
Stainless steel bars and shapes (hot-finished or cold-finished)
Key Differences
Can ASTM A240/A240M S30908 Be Substituted With ASTM A276/A276M S30940?
ASTM A240/A240M S30908 and ASTM A276/A276M S30940 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S30940 is often considered as a substitute for ASTM A240/A240M S30908 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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ASTM A240/A240M S30908
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ASTM A276/A276M S30940
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S30908 and ASTM A276/A276M S30940?
ASTM A276/A276M S30940 specifies Nb which is not specified for ASTM A240/A240M S30908.
Can ASTM A240/A240M S30908 be substituted with ASTM A276/A276M S30940?
ASTM A240/A240M S30908 and ASTM A276/A276M S30940 overlap closely enough on chemistry and mechanical properties that ASTM A276/A276M S30940 is often considered as a substitute for ASTM A240/A240M S30908 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.