Close Alternative — 84.7% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S30435 (ASTM A240/A240M:2025) and JIS G4305 SUS304J1 (JIS G4305:2012) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S30435 is typically used for pressure vessels and general applications (plate, sheet and strip), while JIS G4305 SUS304J1 is commonly used for cold-rolled stainless steel plates, sheet and strip.
ASTM A240/A240M S30435 is defined under ASTM International, originating from United States, while JIS G4305 SUS304J1 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, ASTM A240/A240M S30435 vs JIS G4305 SUS304J1 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
ASTM A240/A240M S30435
JIS G4305 SUS304J1
Tensile Strength
>=450 MPa
>=450 MPa
Yield Strength
>=155 MPa
>=155 MPa
Elongation
>=45%
>=40%
Hardness
<=187 HB
<=187 HB
Condition
Plate, sheet and strip; 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 S30435
Pressure vessels and general applications (plate, sheet and strip)
JIS G4305 SUS304J1
Cold-rolled stainless steel plates, sheet and strip
Can ASTM A240/A240M S30435 Be Substituted With JIS G4305 SUS304J1?
ASTM A240/A240M S30435 and JIS G4305 SUS304J1 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 S30435 and JIS G4305 SUS304J1?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S30435 be substituted with JIS G4305 SUS304J1?
ASTM A240/A240M S30435 and JIS G4305 SUS304J1 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.