Close Alternative — 82.9% match
based on chemical composition and mechanical property overlap.
IS 1570 (Part 4) 20Mn5Cr5 (IS 1570 (Part 4):1988) and SAE J404 5120 (SAE J404:2009) 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 SAE J404 5120 is defined under SAE International, originating from United States.
As per chemical composition, IS 1570 (Part 4) 20Mn5Cr5 vs SAE J404 5120 is a 82.9% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a close alternative overall at 82.9%.
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
SAE J404 5120
Tensile Strength
>=990 MPa
Not specified
Elongation
>=8%
Not specified
Izod Impact
>=38 J
Not specified
Condition
Case hardening steel, refined and quenched, core properties
Not specified
Typical Applications
IS 1570 (Part 4) 20Mn5Cr5
Not documented
SAE J404 5120
Case hardened gears, pins, shafts, cams, automotive transmission parts
Key Differences
SAE J404 5120 specifies P, S which are not specified for IS 1570 (Part 4) 20Mn5Cr5.
Can IS 1570 (Part 4) 20Mn5Cr5 Be Substituted With SAE J404 5120?
IS 1570 (Part 4) 20Mn5Cr5 and SAE J404 5120 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 1570 (Part 4) 20Mn5Cr5 and SAE J404 5120?
SAE J404 5120 specifies P, S which are not specified for IS 1570 (Part 4) 20Mn5Cr5.
Can IS 1570 (Part 4) 20Mn5Cr5 be substituted with SAE J404 5120?
IS 1570 (Part 4) 20Mn5Cr5 and SAE J404 5120 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.