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ASTM A959 630 vs ASTM A240/A240M S43100

Close Alternative — 83.5% match based on chemical composition and mechanical property overlap.

ASTM A959 630 (ASTM A959:2011) and ASTM A240/A240M S43100 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 630 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S43100 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 630 is defined under ASTM International, originating from United States, while ASTM A240/A240M S43100 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 630 vs ASTM A240/A240M S43100 is a 83.5% 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 83.5%.

Frequently Compared With ASTM A959 630:
GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH EN 10088-1 1.4845 GB/T 3280 06Cr19Ni10 ASTM A959 .- IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
83.5%
MECHANICAL MATCH
No shared data
OVERALL
83.5%
Specifications
Property ASTM A959 630 ASTM A240/A240M S43100
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.07 <=0.20
Cb (%) 0.15-0.45 Not specified
Cr (%) 15.0-17.0 15.0-17.0
Cu (%) 3.0-5.0 Not specified
Mn (%) <=1.00 <=1.00
Ni (%) 3.0-5.0 1.25-2.50
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
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 630 ASTM A240/A240M S43100
Hardness Not specified <=285 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 630
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S43100
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 630 Be Substituted With ASTM A240/A240M S43100?
ASTM A959 630 and ASTM A240/A240M S43100 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 630
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ASTM A240/A240M S43100
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Frequently Asked Questions
What is the difference between ASTM A959 630 and ASTM A240/A240M S43100?
ASTM A959 630 specifies Cb, Cu which are not specified for ASTM A240/A240M S43100.
Can ASTM A959 630 be substituted with ASTM A240/A240M S43100?
ASTM A959 630 and ASTM A240/A240M S43100 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.