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ASTM A959 16-8-2H vs ASTM A240/A240M S31609

Close Alternative — 73.4% match based on chemical composition and mechanical property overlap.

ASTM A959 16-8-2H (ASTM A959:2011) and ASTM A240/A240M S31609 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 16-8-2H is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S31609 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 16-8-2H is defined under ASTM International, originating from United States, while ASTM A240/A240M S31609 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 16-8-2H vs ASTM A240/A240M S31609 is a 73.4% 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 73.4%.

Frequently Compared With ASTM A959 16-8-2H:
ASTM A959 .- GB/T 3280 06Cr19Ni10 IS 1570 (Part 7) 12Cr12Ni2Mo GOST 5632 08X18H10 EN 10088-1 1.4845 GOST 5632 06Kh23N28 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH EN 10088-1 1.4301 EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
73.4%
MECHANICAL MATCH
No shared data
OVERALL
73.4%
Specifications
Property ASTM A959 16-8-2H ASTM A240/A240M S31609
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) 0.05-0.10 0.04-0.10
Cr (%) 14.5-16.5 16.0-18.0
Mn (%) <=2.00 <=2.00
Mo (%) 1.50-2.00 2.00-3.00
Ni (%) 7.5-9.5 10.0-14.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=0.75
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 16-8-2H ASTM A240/A240M S31609
Tensile Strength Not specified >=515 MPa
Yield Strength Not specified >=205 MPa
Elongation Not specified >=40%
Hardness Not specified <=217 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 16-8-2H
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S31609
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A959 16-8-2H Be Substituted With ASTM A240/A240M S31609?
ASTM A959 16-8-2H and ASTM A240/A240M S31609 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 16-8-2H
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ASTM A240/A240M S31609
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Frequently Asked Questions
What is the difference between ASTM A959 16-8-2H and ASTM A240/A240M S31609?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 16-8-2H be substituted with ASTM A240/A240M S31609?
ASTM A959 16-8-2H and ASTM A240/A240M S31609 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.