Strong Match — 100% match
based on chemical composition and mechanical property overlap.
JIS G4304 SUS347 (JIS G4304:2021) and JIS G4305 SUS321 (JIS G4305:2012) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4304 SUS347 is typically used for hot-rolled stainless steel plates and strips, while JIS G4305 SUS321 is commonly used for cold-rolled stainless steel plates, sheet and strip.
JIS G4304 SUS347 is defined under Japanese Industrial Standards (JIS), originating from Japan, while JIS G4305 SUS321 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, JIS G4304 SUS347 vs JIS G4305 SUS321 is a 100% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 100%.
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 SUS347
JIS G4305 SUS321
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 G4304 SUS347
Hot-rolled stainless steel plates and strips
JIS G4305 SUS321
Cold-rolled stainless steel plates, sheet and strip
Can JIS G4304 SUS347 Be Substituted With JIS G4305 SUS321?
JIS G4304 SUS347 and JIS G4305 SUS321 overlap closely enough on chemistry and mechanical properties that JIS G4305 SUS321 is often considered as a substitute for JIS G4304 SUS347 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 SUS347 and JIS G4305 SUS321?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4304 SUS347 be substituted with JIS G4305 SUS321?
JIS G4304 SUS347 and JIS G4305 SUS321 overlap closely enough on chemistry and mechanical properties that JIS G4305 SUS321 is often considered as a substitute for JIS G4304 SUS347 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.