Strong Match — 98.1% match
based on chemical composition and mechanical property overlap.
JIS G4304 SUS304Cu (JIS G4304:2021) and KS D3566 STS304 (KS D3566:2021) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4304 SUS304Cu is typically used for hot-rolled stainless steel plates and strips, while KS D3566 STS304 is commonly used for chemical equipment, food processing machinery, kitchen equipment, architectural applications, storage tanks..
JIS G4304 SUS304Cu is defined under Japanese Industrial Standards (JIS), originating from Japan, while KS D3566 STS304 is defined under Korean Industrial Standards (KS), originating from South Korea.
As per chemical composition, JIS G4304 SUS304Cu vs KS D3566 STS304 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 G4304 SUS304Cu
KS D3566 STS304
Tensile Strength
>=520 MPa
520 MPa min
Yield Strength
>=205 MPa
Not specified
Elongation
>=40%
40% min
Hardness
<=187 HB
HB 187 max
Condition
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser
JIS G4304 SUS304Cu specifies Cu which is not specified for KS D3566 STS304.
Can JIS G4304 SUS304Cu Be Substituted With KS D3566 STS304?
JIS G4304 SUS304Cu and KS D3566 STS304 overlap closely enough on chemistry and mechanical properties that KS D3566 STS304 is often considered as a substitute for JIS G4304 SUS304Cu 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 G4304 SUS304Cu and KS D3566 STS304?
JIS G4304 SUS304Cu specifies Cu which is not specified for KS D3566 STS304.
Can JIS G4304 SUS304Cu be substituted with KS D3566 STS304?
JIS G4304 SUS304Cu and KS D3566 STS304 overlap closely enough on chemistry and mechanical properties that KS D3566 STS304 is often considered as a substitute for JIS G4304 SUS304Cu in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.