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ASTM A959 S31002 vs ASTM A240/A240M S31050

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

ASTM A959 S31002 (ASTM A959:2011) and ASTM A240/A240M S31050 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S31002 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S31050 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S31002 is defined under ASTM International, originating from United States, while ASTM A240/A240M S31050 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S31002 vs ASTM A240/A240M S31050 is a 73.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With ASTM A959 S31002:
ASTM A959 29-4-2 ASTM A959 29-4 EN 10088-1 1.4845 GB/T 3280 06Cr19Ni10 IS 1570 (Part 7) 12Cr12MoH GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 ASTM A959 25-4-4 ASTM A959 .-
Match Breakdown
CHEMISTRY MATCH
73.1%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property ASTM A959 S31002 ASTM A240/A240M S31050
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.015 <=0.020
Cr (%) 24.0-26.0 24.0-26.0
Mn (%) <=2.00 <=2.00
Mo (%) <=0.10 1.60-2.60
N (%) <=0.10 0.09-0.15
Ni (%) 19.0-22.0 20.5-23.5
P (%) <=0.020 <=0.030
S (%) <=0.015 <=0.010
Si (%) <=0.15 <=0.50
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A959 S31002 ASTM A240/A240M S31050
Tensile Strength Not specified >=580 MPa
Yield Strength Not specified >=270 MPa
Elongation Not specified >=25%
Hardness Not specified <=217 HB
Condition Not specified t <= 0.25 in. (first condition printed); yield by 0.2 percent offset
Typical Applications
ASTM A959 S31002
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S31050
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A959 S31002 Be Substituted With ASTM A240/A240M S31050?
ASTM A959 S31002 and ASTM A240/A240M S31050 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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ASTM A959 S31002
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Frequently Asked Questions
What is the difference between ASTM A959 S31002 and ASTM A240/A240M S31050?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 S31002 be substituted with ASTM A240/A240M S31050?
ASTM A959 S31002 and ASTM A240/A240M S31050 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.