Strong Match — 98.1% match
based on chemical composition and mechanical property overlap.
JIS G4305 SUS304 (JIS G4305:2012) and JIS G4304 SUS304Cu (JIS G4304:2021) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4305 SUS304 is typically used for cold-rolled stainless steel plates, sheet and strip, while JIS G4304 SUS304Cu is commonly used for hot-rolled stainless steel plates and strips.
JIS G4305 SUS304 is defined under Japanese Industrial Standards (JIS), originating from Japan, while JIS G4304 SUS304Cu is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, JIS G4305 SUS304 vs JIS G4304 SUS304Cu is a 97.2% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 98.1%.
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 SUS304
JIS G4304 SUS304Cu
Tensile Strength
>=520 MPa
>=520 MPa
Yield Strength
>=205 MPa
>=205 MPa
Elongation
>=40%
>=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 G4305 SUS304
Cold-rolled stainless steel plates, sheet and strip
JIS G4304 SUS304Cu
Hot-rolled stainless steel plates and strips
Key Differences
JIS G4304 SUS304Cu specifies Cu which is not specified for JIS G4305 SUS304.
Can JIS G4305 SUS304 Be Substituted With JIS G4304 SUS304Cu?
JIS G4305 SUS304 and JIS G4304 SUS304Cu overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS304Cu is often considered as a substitute for JIS G4305 SUS304 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between JIS G4305 SUS304 and JIS G4304 SUS304Cu?
JIS G4304 SUS304Cu specifies Cu which is not specified for JIS G4305 SUS304.
Can JIS G4305 SUS304 be substituted with JIS G4304 SUS304Cu?
JIS G4305 SUS304 and JIS G4304 SUS304Cu overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS304Cu is often considered as a substitute for JIS G4305 SUS304 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.