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ASTM A240/A240M S44500 vs ASTM A959 .-

Close Alternative — 75.1% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S44500 (ASTM A240/A240M:2025) and ASTM A959 .- (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S44500 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 .- is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S44500 is defined under ASTM International, originating from United States, while ASTM A959 .- is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S44500 vs ASTM A959 .- is a 75.1% 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 75.1%.

Frequently Compared With ASTM A240/A240M S44500:
EN 10088-1 1.4301 EN 10088-1 1.4845 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoVH GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
75.1%
MECHANICAL MATCH
No shared data
OVERALL
75.1%
Specifications
Property ASTM A240/A240M S44500 ASTM A959 .-
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.020 <=0.030
Mn (%) <=1.00 <=1.00
P (%) <=0.040 <=0.040
S (%) <=0.012 <=0.030
Si (%) <=1.00 <=1.00
Cr (%) 19.0-21.0 18.0-20.0
Ni (%) <=0.60 <=0.50
N (%) <=0.03 <=0.030
Cu (%) 0.30-0.60 Not specified
Nb (%) <=0.80 Not specified
Cb (%) Not specified 0.10-0.60
Ti (%) Not specified 0.07-0.30
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A240/A240M S44500 ASTM A959 .-
Tensile Strength >=427 MPa Not specified
Yield Strength >=205 MPa Not specified
Elongation >=22% Not specified
Hardness <=83 HRBW Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S44500
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 .-
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A240/A240M S44500 Be Substituted With ASTM A959 .-?
ASTM A240/A240M S44500 and ASTM A959 .- 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.
On M-EX Right Now
ASTM A240/A240M S44500
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ASTM A959 .-
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S44500 and ASTM A959 .-?
ASTM A240/A240M S44500 specifies Cu, Nb which are not specified for ASTM A959 .-. ASTM A959 .- specifies Cb, Ti which are not specified for ASTM A240/A240M S44500.
Can ASTM A240/A240M S44500 be substituted with ASTM A959 .-?
ASTM A240/A240M S44500 and ASTM A959 .- 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.