Close Alternative — 84.7% match
based on chemical composition and mechanical property overlap.
JIS G4305 SUS304J1 (JIS G4305:2012) and ASTM A240/A240M S30435 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4305 SUS304J1 is typically used for cold-rolled stainless steel plates, sheet and strip, while ASTM A240/A240M S30435 is commonly used for pressure vessels and general applications (plate, sheet and strip).
JIS G4305 SUS304J1 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A240/A240M S30435 is defined under ASTM International, originating from United States.
As per chemical composition, JIS G4305 SUS304J1 vs ASTM A240/A240M S30435 is a 89.6% match.
As per mechanical properties, the match is 75%.
Combined, this makes them a close alternative overall at 84.7%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
JIS G4305 SUS304J1
ASTM A240/A240M S30435
Tensile Strength
>=450 MPa
>=450 MPa
Yield Strength
>=155 MPa
>=155 MPa
Elongation
>=40%
>=45%
Hardness
<=187 HB
<=187 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 G4305 SUS304J1
Cold-rolled stainless steel plates, sheet and strip
ASTM A240/A240M S30435
Pressure vessels and general applications (plate, sheet and strip)
Can JIS G4305 SUS304J1 Be Substituted With ASTM A240/A240M S30435?
JIS G4305 SUS304J1 and ASTM A240/A240M S30435 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 G4305 SUS304J1 and ASTM A240/A240M S30435?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4305 SUS304J1 be substituted with ASTM A240/A240M S30435?
JIS G4305 SUS304J1 and ASTM A240/A240M S30435 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.