Close Alternative — 83.6% match
based on chemical composition and mechanical property overlap.
IS 6603 X15Cr18Ni8 (IS 6603:2024) and IS 6603 X06Cr18Ni9Cu2S (IS 6603:2024) are both steel grades.
Both fall under the Stainless Steel category.
IS 6603 X15Cr18Ni8 is typically used for general purposes, semi-finished products, bars, wire rods and bright bars, while IS 6603 X06Cr18Ni9Cu2S is commonly used for general purposes, semi-finished products, bars, wire rods and bright bars.
IS 6603 X15Cr18Ni8 is defined under Bureau of Indian Standards (IS), originating from India, while IS 6603 X06Cr18Ni9Cu2S is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 6603 X15Cr18Ni8 vs IS 6603 X06Cr18Ni9Cu2S is a 77.7% match.
As per mechanical properties, the match is 95.2%.
Combined, this makes them a close alternative overall at 83.6%.
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 X15Cr18Ni8
IS 6603 X06Cr18Ni9Cu2S
Tensile Strength
500-700 MPa
500-710 MPa
Condition
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D, rod only; Yield Strength is Rp0.2, Elongation is A (longitudinal)
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 160 mm; Yield Strength is Rp0.2, Elongation is A (longitudinal)
Yield Strength
Not specified
>=185 MPa
Elongation
Not specified
>=35%
Typical Applications
IS 6603 X15Cr18Ni8
General purposes, semi-finished products, bars, wire rods and bright bars
IS 6603 X06Cr18Ni9Cu2S
General purposes, semi-finished products, bars, wire rods and bright bars
Key Differences
IS 6603 X06Cr18Ni9Cu2S specifies Cu which is not specified for IS 6603 X15Cr18Ni8.
Can IS 6603 X15Cr18Ni8 Be Substituted With IS 6603 X06Cr18Ni9Cu2S?
IS 6603 X15Cr18Ni8 and IS 6603 X06Cr18Ni9Cu2S 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 IS 6603 X15Cr18Ni8 and IS 6603 X06Cr18Ni9Cu2S?
IS 6603 X06Cr18Ni9Cu2S specifies Cu which is not specified for IS 6603 X15Cr18Ni8.
Can IS 6603 X15Cr18Ni8 be substituted with IS 6603 X06Cr18Ni9Cu2S?
IS 6603 X15Cr18Ni8 and IS 6603 X06Cr18Ni9Cu2S 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.