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ASTM A959 S34751 vs ASTM A240/A240M S30403

Close Alternative — 84.8% match based on chemical composition and mechanical property overlap.

ASTM A959 S34751 (ASTM A959:2011) and ASTM A240/A240M S30403 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S34751 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S30403 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S34751 is defined under ASTM International, originating from United States, while ASTM A240/A240M S30403 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S34751 vs ASTM A240/A240M S30403 is a 84.8% 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 84.8%.

Frequently Compared With ASTM A959 S34751:
EN 10088-1 1.4401 GOST 5632 06Kh23N28 ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
84.8%
MECHANICAL MATCH
No shared data
OVERALL
84.8%
Specifications
Property ASTM A959 S34751 ASTM A240/A240M S30403
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.015 <=0.030
Cb (%) 0.20-0.50 Not specified
Cr (%) 17.0-20.0 18.0-20.0
Mn (%) <=2.00 <=2.00
N (%) 0.06-0.10 <=0.10
Ni (%) 9.0-13.0 8.0-12.0
P (%) <=0.020 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=0.75 <=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 S34751 ASTM A240/A240M S30403
Tensile Strength Not specified >=485 MPa
Yield Strength Not specified >=170 MPa
Elongation Not specified >=40%
Hardness Not specified <=201 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 S34751
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S30403
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 S34751 Be Substituted With ASTM A240/A240M S30403?
ASTM A959 S34751 and ASTM A240/A240M S30403 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 S34751
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ASTM A240/A240M S30403
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Frequently Asked Questions
What is the difference between ASTM A959 S34751 and ASTM A240/A240M S30403?
ASTM A959 S34751 specifies Cb which is not specified for ASTM A240/A240M S30403.
Can ASTM A959 S34751 be substituted with ASTM A240/A240M S30403?
ASTM A959 S34751 and ASTM A240/A240M S30403 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.