IS 6603 X03Cr17Ni12Mo3 vs IS 1570 (Part 7) 12Cr12MoH
Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
IS 6603 X03Cr17Ni12Mo3 (IS 6603:2024) and IS 1570 (Part 7) 12Cr12MoH (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Stainless Steel category.
IS 6603 X03Cr17Ni12Mo3 is typically used for general purposes, semi-finished products, bars, wire rods and bright bars, while IS 1570 (Part 7) 12Cr12MoH is commonly used for boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature.
IS 6603 X03Cr17Ni12Mo3 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 7) 12Cr12MoH is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 6603 X03Cr17Ni12Mo3 vs IS 1570 (Part 7) 12Cr12MoH is a 57.1% match.
As per mechanical properties, the match is 3.7%.
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 X03Cr17Ni12Mo3
IS 1570 (Part 7) 12Cr12MoH
Tensile Strength
520-720 MPa
680-880 MPa
Yield Strength
>=205 MPa
>=490 MPa (0.2 % proof stress)
Elongation
>=40%
>=20%
Condition
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)
Bars, forgings, Q+T, thickness up to 75 (first row of Table 3)
Typical Applications
IS 6603 X03Cr17Ni12Mo3
General purposes, semi-finished products, bars, wire rods and bright bars
IS 1570 (Part 7) 12Cr12MoH
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
IS 6603 X03Cr17Ni12Mo3 specifies N which is not specified for IS 1570 (Part 7) 12Cr12MoH.
Can IS 6603 X03Cr17Ni12Mo3 Be Substituted With IS 1570 (Part 7) 12Cr12MoH?
IS 6603 X03Cr17Ni12Mo3 and IS 1570 (Part 7) 12Cr12MoH 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 X03Cr17Ni12Mo3 and IS 1570 (Part 7) 12Cr12MoH?
IS 6603 X03Cr17Ni12Mo3 specifies N which is not specified for IS 1570 (Part 7) 12Cr12MoH.
Can IS 6603 X03Cr17Ni12Mo3 be substituted with IS 1570 (Part 7) 12Cr12MoH?
IS 6603 X03Cr17Ni12Mo3 and IS 1570 (Part 7) 12Cr12MoH 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.