Close Alternative — 81.8% match
based on chemical composition and mechanical property overlap.
JIS G4304 SUS315J1 (JIS G4304:2021) and ASTM A240/A240M S30530 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4304 SUS315J1 is typically used for hot-rolled stainless steel plates and strips, while ASTM A240/A240M S30530 is commonly used for pressure vessels and general applications (plate, sheet and strip).
JIS G4304 SUS315J1 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A240/A240M S30530 is defined under ASTM International, originating from United States.
As per chemical composition, JIS G4304 SUS315J1 vs ASTM A240/A240M S30530 is a 97.7% match.
As per mechanical properties, the match is 50%.
Combined, this makes them a close alternative overall at 81.8%.
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 SUS315J1
ASTM A240/A240M S30530
Tensile Strength
>=520 MPa
>=515 MPa
Yield Strength
>=205 MPa
>=205 MPa
Elongation
>=40%
>=40%
Hardness
<=187 HB
<=201 HB
Condition
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser
Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
JIS G4304 SUS315J1
Hot-rolled stainless steel plates and strips
ASTM A240/A240M S30530
Pressure vessels and general applications (plate, sheet and strip)
Can JIS G4304 SUS315J1 Be Substituted With ASTM A240/A240M S30530?
JIS G4304 SUS315J1 and ASTM A240/A240M S30530 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 SUS315J1 and ASTM A240/A240M S30530?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4304 SUS315J1 be substituted with ASTM A240/A240M S30530?
JIS G4304 SUS315J1 and ASTM A240/A240M S30530 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.