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ASTM A959 S31200 vs ASTM A240/A240M S32950

Close Alternative — 70.5% match based on chemical composition and mechanical property overlap.

ASTM A959 S31200 (ASTM A959:2011) and ASTM A240/A240M S32950 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S31200 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S32950 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S31200 is defined under ASTM International, originating from United States, while ASTM A240/A240M S32950 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S31200 vs ASTM A240/A240M S32950 is a 70.5% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 70.5%.

Frequently Compared With ASTM A959 S31200:
ASTM A959 2205 ASTM A959 25-4-4 ASTM A959 2507 ASTM A959 255 ASTM A959 .- EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 GB/T 3280 06Cr19Ni10 EN 10088-1 1.4401
Match Breakdown
CHEMISTRY MATCH
70.5%
MECHANICAL MATCH
No shared data
OVERALL
70.5%
Specifications
Property ASTM A959 S31200 ASTM A240/A240M S32950
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
Cr (%) 24.0-26.0 26.0-29.0
Mn (%) <=2.00 <=2.00
Mo (%) 1.20-2.00 1.00-2.50
N (%) 0.14-0.20 0.15-0.35
Ni (%) 5.5-6.5 3.5-5.2
P (%) <=0.045 <=0.035
S (%) <=0.030 <=0.010
Si (%) <=1.00 <=0.60
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 S31200 ASTM A240/A240M S32950
Tensile Strength Not specified >=690 MPa
Yield Strength Not specified >=485 MPa
Elongation Not specified >=15%
Hardness Not specified <=293 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 S31200
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S32950
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A959 S31200 Be Substituted With ASTM A240/A240M S32950?
ASTM A959 S31200 and ASTM A240/A240M S32950 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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ASTM A959 S31200
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ASTM A240/A240M S32950
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Frequently Asked Questions
What is the difference between ASTM A959 S31200 and ASTM A240/A240M S32950?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 S31200 be substituted with ASTM A240/A240M S32950?
ASTM A959 S31200 and ASTM A240/A240M S32950 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.