Close Alternative — 73.6% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S31254 (ASTM A240/A240M:2025) and JIS G4304 SUS312L (JIS G4304:2021) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S31254 is typically used for pressure vessels and general applications (plate, sheet and strip), while JIS G4304 SUS312L is commonly used for hot-rolled stainless steel plates and strips.
ASTM A240/A240M S31254 is defined under ASTM International, originating from United States, while JIS G4304 SUS312L is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, ASTM A240/A240M S31254 vs JIS G4304 SUS312L is a 85.3% match.
As per mechanical properties, the match is 50%.
Combined, this makes them a close alternative overall at 73.6%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A240/A240M S31254
JIS G4304 SUS312L
Tensile Strength
>=690 MPa
>=650 MPa
Yield Strength
>=310 MPa
>=300 MPa
Elongation
>=35%
>=35%
Hardness
<=223 HB
<=223 HB
Condition
Sheet and strip (first condition printed); yield by 0.2 percent offset
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser
Typical Applications
ASTM A240/A240M S31254
Pressure vessels and general applications (plate, sheet and strip)
JIS G4304 SUS312L
Hot-rolled stainless steel plates and strips
Can ASTM A240/A240M S31254 Be Substituted With JIS G4304 SUS312L?
ASTM A240/A240M S31254 and JIS G4304 SUS312L 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 ASTM A240/A240M S31254 and JIS G4304 SUS312L?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S31254 be substituted with JIS G4304 SUS312L?
ASTM A240/A240M S31254 and JIS G4304 SUS312L 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.