Close Alternative — 81.5% match
based on chemical composition and mechanical property overlap.
IS 6603 X02Cr22Ni5Mo3N (IS 6603:2024) and ASTM A240/A240M S31803 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
IS 6603 X02Cr22Ni5Mo3N is typically used for general purposes, semi-finished products, bars, wire rods and bright bars, while ASTM A240/A240M S31803 is commonly used for pressure vessels and general applications (plate, sheet and strip).
IS 6603 X02Cr22Ni5Mo3N is defined under Bureau of Indian Standards (IS), originating from India, while ASTM A240/A240M S31803 is defined under ASTM International, originating from United States.
As per chemical composition, IS 6603 X02Cr22Ni5Mo3N vs ASTM A240/A240M S31803 is a 97.3% match.
As per mechanical properties, the match is 50%.
Combined, this makes them a close alternative overall at 81.5%.
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 X02Cr22Ni5Mo3N
ASTM A240/A240M S31803
Tensile Strength
>=650 MPa
>=620 MPa
Yield Strength
>=450 MPa
>=450 MPa
Elongation
>=25%
>=25%
Hardness
<=290 HB
<=293 HB
Condition
Solution annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 160 mm; Tensile Strength is a minimum as printed, hardness for guidance only
Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
IS 6603 X02Cr22Ni5Mo3N
General purposes, semi-finished products, bars, wire rods and bright bars
ASTM A240/A240M S31803
Pressure vessels and general applications (plate, sheet and strip)
Can IS 6603 X02Cr22Ni5Mo3N Be Substituted With ASTM A240/A240M S31803?
IS 6603 X02Cr22Ni5Mo3N and ASTM A240/A240M S31803 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 X02Cr22Ni5Mo3N and ASTM A240/A240M S31803?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 6603 X02Cr22Ni5Mo3N be substituted with ASTM A240/A240M S31803?
IS 6603 X02Cr22Ni5Mo3N and ASTM A240/A240M S31803 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.