Close Alternative — 70.8% match
based on chemical composition and mechanical property overlap.
IS 6603 X04Cr12 (IS 6603:2024) and IS 1570 (Part 7) 12Cr13H (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
IS 6603 X04Cr12 is typically used for general purposes, semi-finished products, bars, wire rods and bright bars, while IS 1570 (Part 7) 12Cr13H is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature.
IS 6603 X04Cr12 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 7) 12Cr13H is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 6603 X04Cr12 vs IS 1570 (Part 7) 12Cr13H is a 89.6% match.
As per mechanical properties, the match is 33.3%.
Combined, this makes them a close alternative overall at 70.8%.
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 X04Cr12
IS 1570 (Part 7) 12Cr13H
Tensile Strength
>=400 MPa
470-670 MPa
Yield Strength
>=230 MPa
>=265 MPa (0.2 % proof stress)
Elongation
>=20%
>=20%
Hardness
<=200 HB
Not specified
Condition
Annealed, conditions 1C, 1E, 1D, 1X, 1G and 2D, thickness or diameter up to 25 mm; Tensile Strength is a minimum as printed
Bars, forgings, plates, A, thickness up to 160 (first row of Table 3)
Typical Applications
IS 6603 X04Cr12
General purposes, semi-finished products, bars, wire rods and bright bars
IS 1570 (Part 7) 12Cr13H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Can IS 6603 X04Cr12 Be Substituted With IS 1570 (Part 7) 12Cr13H?
IS 6603 X04Cr12 and IS 1570 (Part 7) 12Cr13H 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 X04Cr12 and IS 1570 (Part 7) 12Cr13H?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 6603 X04Cr12 be substituted with IS 1570 (Part 7) 12Cr13H?
IS 6603 X04Cr12 and IS 1570 (Part 7) 12Cr13H 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.