Strong Match — 93.1% match
based on chemical composition and mechanical property overlap.
IS 1570 (Part 4) 60Si7 (IS 1570 (Part 4):1988) and JIS G4801 SUP6 (JIS G 4801:2005) are both steel grades.
Both fall under the Spring Steel category.
IS 1570 (Part 4) 60Si7 is defined under Bureau of Indian Standards (IS), originating from India, while JIS G4801 SUP6 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, IS 1570 (Part 4) 60Si7 vs JIS G4801 SUP6 is a 93.1% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a strong match overall at 93.1%.
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) 60Si7
JIS G4801 SUP6
Tensile Strength
Not specified
≥1130 MPa
Yield Strength
Not specified
≥980 MPa
Elongation
Not specified
≥7%
Hardness
Not specified
341–415 HB
Typical Applications
IS 1570 (Part 4) 60Si7
Not documented
JIS G4801 SUP6
Automotive suspension springs, leaf springs
Key Differences
JIS G4801 SUP6 specifies S, P which are not specified for IS 1570 (Part 4) 60Si7.
Can IS 1570 (Part 4) 60Si7 Be Substituted With JIS G4801 SUP6?
IS 1570 (Part 4) 60Si7 and JIS G4801 SUP6 overlap closely enough on chemistry and mechanical properties that JIS G4801 SUP6 is often considered as a substitute for IS 1570 (Part 4) 60Si7 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between IS 1570 (Part 4) 60Si7 and JIS G4801 SUP6?
JIS G4801 SUP6 specifies S, P which are not specified for IS 1570 (Part 4) 60Si7.
Can IS 1570 (Part 4) 60Si7 be substituted with JIS G4801 SUP6?
IS 1570 (Part 4) 60Si7 and JIS G4801 SUP6 overlap closely enough on chemistry and mechanical properties that JIS G4801 SUP6 is often considered as a substitute for IS 1570 (Part 4) 60Si7 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.