Close Alternative — 80.2% match
based on chemical composition and mechanical property overlap.
JIS G4104 SCr415 (JIS G 4104:1979) and SAE J404 5120 (SAE J404:2000) are both steel grades.
Both fall under the Alloy Steel category.
JIS G4104 SCr415 is typically used for case hardened gears, cams, pins, while SAE J404 5120 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope.
JIS G4104 SCr415 is defined under Japanese Industrial Standards (JIS), originating from Japan, while SAE J404 5120 is defined under SAE International, originating from United States.
As per chemical composition, JIS G4104 SCr415 vs SAE J404 5120 is a 80.2% 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 80.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G4104 SCr415
SAE J404 5120
Tensile Strength
≥735 MPa
Not specified
Case Hardness HRC
56–62
Not specified
Typical Applications
JIS G4104 SCr415
Case hardened gears, cams, pins
SAE J404 5120
Chemistry-only alloy steel grade; see the composition notes for product scope
Can JIS G4104 SCr415 Be Substituted With SAE J404 5120?
JIS G4104 SCr415 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 JIS G4104 SCr415 and SAE J404 5120?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4104 SCr415 be substituted with SAE J404 5120?
JIS G4104 SCr415 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.