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ASTM A959 446 vs ASTM A240/A240M S44200

Close Alternative — 83% match based on chemical composition and mechanical property overlap.

ASTM A959 446 (ASTM A959:2011) and ASTM A240/A240M S44200 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 446 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S44200 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 446 is defined under ASTM International, originating from United States, while ASTM A240/A240M S44200 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 446 vs ASTM A240/A240M S44200 is a 83% 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%.

Frequently Compared With ASTM A959 446:
EN 10088-1 1.4006 ASTM A959 .- EN 10088-1 1.4401 EN 10088-1 1.4845 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4301 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H IS 1570 (Part 7) 12Cr12MoH
Match Breakdown
CHEMISTRY MATCH
83%
MECHANICAL MATCH
No shared data
OVERALL
83%
Specifications
Property ASTM A959 446 ASTM A240/A240M S44200
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.20 <=0.20
Cr (%) 23.0-27.0 18.0-23.0
Mn (%) <=1.50 <=1.00
N (%) <=0.25 Not specified
Ni (%) <=0.75 <=0.60
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.040
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 446 ASTM A240/A240M S44200
Tensile Strength Not specified >=515 MPa
Yield Strength Not specified >=275 MPa
Elongation Not specified >=20%
Hardness Not specified <=217 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 446
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S44200
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 446 Be Substituted With ASTM A240/A240M S44200?
ASTM A959 446 and ASTM A240/A240M S44200 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 446
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ASTM A240/A240M S44200
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Frequently Asked Questions
What is the difference between ASTM A959 446 and ASTM A240/A240M S44200?
ASTM A959 446 specifies N which is not specified for ASTM A240/A240M S44200.
Can ASTM A959 446 be substituted with ASTM A240/A240M S44200?
ASTM A959 446 and ASTM A240/A240M S44200 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.