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