Related Material — 61.7% match
based on chemical composition and mechanical property overlap.
JIS G4801 SUP6 (JIS G 4801:2005) and IS 3431 60Si7 (IS 3431:1982) are both steel grades.
Both fall under the Spring Steel category.
JIS G4801 SUP6 is typically used for automotive suspension springs, leaf springs, while IS 3431 60Si7 is commonly used for heavy duty leaf springs,suspension springs,automotive springs,railway springs,high stress spring components.
JIS G4801 SUP6 is defined under Japanese Industrial Standards (JIS), originating from Japan, while IS 3431 60Si7 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, JIS G4801 SUP6 vs IS 3431 60Si7 is a 92.6% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a related material overall at 61.7%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G4801 SUP6
IS 3431 60Si7
Tensile Strength
≥1130 MPa
Not specified
Yield Strength
≥980 MPa
Not specified
Elongation
≥7%
Not specified
Hardness
341–415 HB
Not specified
Core Hardness After Quenching
Not specified
>=54 HRC (oil, up to 20 mm round / 16 mm flat)
Elongation (quenched and tempered)
Not specified
>=6%
Hardness, soft annealed
Not specified
<=255 HB
Hardness, untreated (hot rolled)
Not specified
about 310 HB (reference value)
Tensile Strength (quenched and tempered)
Not specified
1320-1570 MPa
Yield Stress (quenched and tempered)
Not specified
>=1130 MPa
Typical Applications
JIS G4801 SUP6
Automotive suspension springs, leaf springs
IS 3431 60Si7
heavy duty leaf springs,suspension springs,automotive springs,railway springs,high stress spring components
Can JIS G4801 SUP6 Be Substituted With IS 3431 60Si7?
JIS G4801 SUP6 and IS 3431 60Si7 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 JIS G4801 SUP6 and IS 3431 60Si7?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4801 SUP6 be substituted with IS 3431 60Si7?
JIS G4801 SUP6 and IS 3431 60Si7 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.