Close Alternative — 80.7% match
based on chemical composition and mechanical property overlap.
JIS G4105 SCM430 (JIS G4105:1979) and SAE J404 4135 (SAE J404:2009) are both steel grades.
Both fall under the Alloy Steel category.
JIS G4105 SCM430 is typically used for high tensile bolts, pressure vessels, aircraft parts, while SAE J404 4135 is commonly used for gears, shafts, pressure vessels, high tensile bolts.
JIS G4105 SCM430 is defined under Japanese Industrial Standards (JIS), originating from Japan, while SAE J404 4135 is defined under SAE International, originating from United States.
As per chemical composition, JIS G4105 SCM430 vs SAE J404 4135 is a 80.7% 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 80.7%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G4105 SCM430
SAE J404 4135
Tensile Strength
≥780 MPa
Not specified
Yield Strength
≥635 MPa
Not specified
Elongation
≥15%
Not specified
Hardness
229–293 HB
Not specified
Typical Applications
JIS G4105 SCM430
High tensile bolts, pressure vessels, aircraft parts
SAE J404 4135
Gears, shafts, pressure vessels, high tensile bolts
Key Differences
SAE J404 4135 specifies P, S which are not specified for JIS G4105 SCM430.
Can JIS G4105 SCM430 Be Substituted With SAE J404 4135?
JIS G4105 SCM430 and SAE J404 4135 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 JIS G4105 SCM430 and SAE J404 4135?
SAE J404 4135 specifies P, S which are not specified for JIS G4105 SCM430.
Can JIS G4105 SCM430 be substituted with SAE J404 4135?
JIS G4105 SCM430 and SAE J404 4135 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.