Close Alternative — 77.1% match
based on chemical composition and mechanical property overlap.
ASTM A959 S44535 (ASTM A959:2011) and ASTM A240/A240M S44330 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A959 S44535 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S44330 is commonly used for pressure vessels and general applications (plate, sheet and strip).
ASTM A959 S44535 is defined under ASTM International, originating from United States, while ASTM A240/A240M S44330 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A959 S44535 vs ASTM A240/A240M S44330 is a 77.1% 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 77.1%.
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 S44535
ASTM A240/A240M S44330
Tensile Strength
Not specified
>=390 MPa
Yield Strength
Not specified
>=205 MPa
Elongation
Not specified
>=22%
Hardness
Not specified
<=187 HB
Condition
Not specified
Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 S44535
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S44330
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
ASTM A959 S44535 specifies Al, La, Ti which are not specified for ASTM A240/A240M S44330.
ASTM A240/A240M S44330 specifies N which is not specified for ASTM A959 S44535.
Can ASTM A959 S44535 Be Substituted With ASTM A240/A240M S44330?
ASTM A959 S44535 and ASTM A240/A240M S44330 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.
What is the difference between ASTM A959 S44535 and ASTM A240/A240M S44330?
ASTM A959 S44535 specifies Al, La, Ti which are not specified for ASTM A240/A240M S44330. ASTM A240/A240M S44330 specifies N which is not specified for ASTM A959 S44535.
Can ASTM A959 S44535 be substituted with ASTM A240/A240M S44330?
ASTM A959 S44535 and ASTM A240/A240M S44330 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.