Related Material — 65% match
based on chemical composition and mechanical property overlap.
JIS G4801 SUP10 (JIS G 4801:2005) and SAE J404 6150 (SAE J404:2009) are both steel grades.
JIS G4801 SUP10 is classified under Spring Steel, while SAE J404 6150 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below.
JIS G4801 SUP10 is typically used for valve springs, high stress coil springs, torsion springs, while SAE J404 6150 is commonly used for springs, hand tools, high strength shafts, axles.
JIS G4801 SUP10 is defined under Japanese Industrial Standards (JIS), originating from Japan, while SAE J404 6150 is defined under SAE International, originating from United States.
As per chemical composition, JIS G4801 SUP10 vs SAE J404 6150 is a 87.8% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a related material overall at 65%.
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 SUP10
SAE J404 6150
Tensile Strength
≥1180 MPa
Not specified
Yield Strength
≥1030 MPa
Not specified
Elongation
≥7%
Not specified
Hardness
363–429 HB
Not specified
Typical Applications
JIS G4801 SUP10
Valve springs, high stress coil springs, torsion springs
SAE J404 6150
Springs, hand tools, high strength shafts, axles
Key Differences
Different category: JIS G4801 SUP10 is Spring Steel, SAE J404 6150 is Alloy Steel.
Can JIS G4801 SUP10 Be Substituted With SAE J404 6150?
JIS G4801 SUP10 and SAE J404 6150 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 SUP10 and SAE J404 6150?
Different category: JIS G4801 SUP10 is Spring Steel, SAE J404 6150 is Alloy Steel.
Can JIS G4801 SUP10 be substituted with SAE J404 6150?
JIS G4801 SUP10 and SAE J404 6150 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.