IS 1570 (Part 4) 20Mn5Cr5 vs IS 1570 (Part 7) 12Cr2Mo5V2H
Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
IS 1570 (Part 4) 20Mn5Cr5 (IS 1570 (Part 4):1988) and IS 1570 (Part 7) 12Cr2Mo5V2H (IS 1570 (Part 7):1992) are both steel grades.
Both fall under the Alloy Steel category.
IS 1570 (Part 4) 20Mn5Cr5 is defined under Bureau of Indian Standards (IS), originating from India, while IS 1570 (Part 7) 12Cr2Mo5V2H is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 1570 (Part 4) 20Mn5Cr5 vs IS 1570 (Part 7) 12Cr2Mo5V2H is a 63% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 35%.
Frequently Compared With IS 1570 (Part 4) 20Mn5Cr5:
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 1570 (Part 4) 20Mn5Cr5
IS 1570 (Part 7) 12Cr2Mo5V2H
Tensile Strength
>=990 MPa
460-610 MPa
Elongation
>=8%
>=15%
Izod Impact
>=38 J
Not specified
Condition
Case hardening steel, refined and quenched, core properties
Pipes, N+T, thickness - (first row of Table 3)
Yield Strength
Not specified
>=275 MPa (0.2 % proof stress)
Typical Applications
IS 1570 (Part 4) 20Mn5Cr5
Not documented
IS 1570 (Part 7) 12Cr2Mo5V2H
Boilers, pressure vessels, steam turbines, steam and water piping and other power plant equipment working at elevated temperature
Key Differences
IS 1570 (Part 7) 12Cr2Mo5V2H specifies P, Mo, V, Al (metallic) which are not specified for IS 1570 (Part 4) 20Mn5Cr5.
Can IS 1570 (Part 4) 20Mn5Cr5 Be Substituted With IS 1570 (Part 7) 12Cr2Mo5V2H?
IS 1570 (Part 4) 20Mn5Cr5 and IS 1570 (Part 7) 12Cr2Mo5V2H 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 1570 (Part 4) 20Mn5Cr5 and IS 1570 (Part 7) 12Cr2Mo5V2H?
IS 1570 (Part 7) 12Cr2Mo5V2H specifies P, Mo, V, Al (metallic) which are not specified for IS 1570 (Part 4) 20Mn5Cr5.
Can IS 1570 (Part 4) 20Mn5Cr5 be substituted with IS 1570 (Part 7) 12Cr2Mo5V2H?
IS 1570 (Part 4) 20Mn5Cr5 and IS 1570 (Part 7) 12Cr2Mo5V2H 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.