Close Alternative — 70.2% match
based on chemical composition and mechanical property overlap.
JIS G4304 SUS303 (JIS G4304:2021) and JIS G4304 SUS315J1 (JIS G4304:2021) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4304 SUS303 is typically used for hot-rolled stainless steel plates and strips, while JIS G4304 SUS315J1 is commonly used for hot-rolled stainless steel plates and strips.
JIS G4304 SUS303 is defined under Japanese Industrial Standards (JIS), originating from Japan, while JIS G4304 SUS315J1 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, JIS G4304 SUS303 vs JIS G4304 SUS315J1 is a 67.8% match.
As per mechanical properties, the match is 75%.
Combined, this makes them a close alternative overall at 70.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G4304 SUS303
JIS G4304 SUS315J1
Tensile Strength
>=520 MPa
>=520 MPa
Yield Strength
>=205 MPa
>=205 MPa
Elongation
>=35%
>=40%
Hardness
<=187 HB
<=187 HB
Condition
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser
Typical Applications
JIS G4304 SUS303
Hot-rolled stainless steel plates and strips
JIS G4304 SUS315J1
Hot-rolled stainless steel plates and strips
Key Differences
JIS G4304 SUS315J1 specifies Cu which is not specified for JIS G4304 SUS303.
Can JIS G4304 SUS303 Be Substituted With JIS G4304 SUS315J1?
JIS G4304 SUS303 and JIS G4304 SUS315J1 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 G4304 SUS303 and JIS G4304 SUS315J1?
JIS G4304 SUS315J1 specifies Cu which is not specified for JIS G4304 SUS303.
Can JIS G4304 SUS303 be substituted with JIS G4304 SUS315J1?
JIS G4304 SUS303 and JIS G4304 SUS315J1 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.