Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
IS 6603 X05Cr16Ni4CuNb (IS 6603:2024) and ASTM A959 .- (ASTM A959:2011) are both steel grades.
Both fall under the Stainless Steel category.
IS 6603 X05Cr16Ni4CuNb is typically used for general purposes, semi-finished products, bars, wire rods and bright bars, while ASTM A959 .- is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1).
IS 6603 X05Cr16Ni4CuNb is defined under Bureau of Indian Standards (IS), originating from India, while ASTM A959 .- is defined under ASTM International, originating from United States.
As per chemical composition, IS 6603 X05Cr16Ni4CuNb vs ASTM A959 .- is a 51.9% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 6603 X05Cr16Ni4CuNb
ASTM A959 .-
Tensile Strength
<=1200 MPa
Not specified
Hardness
<=363 HB
Not specified
Condition
Solution annealed (+AT), conditions 1C, 1E, 1D, 1X, 1G and 2D; hardness as printed
Not specified
Typical Applications
IS 6603 X05Cr16Ni4CuNb
General purposes, semi-finished products, bars, wire rods and bright bars
ASTM A959 .-
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
IS 6603 X05Cr16Ni4CuNb specifies Mo, Cu, Nb which are not specified for ASTM A959 .-.
ASTM A959 .- specifies Cb, N, Ti which are not specified for IS 6603 X05Cr16Ni4CuNb.
Can IS 6603 X05Cr16Ni4CuNb Be Substituted With ASTM A959 .-?
IS 6603 X05Cr16Ni4CuNb and ASTM A959 .- share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between IS 6603 X05Cr16Ni4CuNb and ASTM A959 .-?
IS 6603 X05Cr16Ni4CuNb specifies Mo, Cu, Nb which are not specified for ASTM A959 .-. ASTM A959 .- specifies Cb, N, Ti which are not specified for IS 6603 X05Cr16Ni4CuNb.
Can IS 6603 X05Cr16Ni4CuNb be substituted with ASTM A959 .-?
IS 6603 X05Cr16Ni4CuNb and ASTM A959 .- share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.