Strong Match — 91.7% match
based on chemical composition and mechanical property overlap.
JIS G4304 SUS323L (JIS G4304:2021) and ASTM A240/A240M S32304 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4304 SUS323L is typically used for hot-rolled stainless steel plates and strips, while ASTM A240/A240M S32304 is commonly used for pressure vessels and general applications (plate, sheet and strip).
JIS G4304 SUS323L is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A240/A240M S32304 is defined under ASTM International, originating from United States.
As per chemical composition, JIS G4304 SUS323L vs ASTM A240/A240M S32304 is a 100% match.
As per mechanical properties, the match is 75%.
Combined, this makes them a strong match overall at 91.7%.
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 SUS323L
ASTM A240/A240M S32304
Tensile Strength
>=600 MPa
>=600 MPa
Yield Strength
>=400 MPa
>=400 MPa
Elongation
>=20%
>=25%
Hardness
<=290 HB
<=290 HB
Condition
Solution heat treated plate and strip, thickness up to 2.0 mm for elongation; proof strength applies only when specified
Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
JIS G4304 SUS323L
Hot-rolled stainless steel plates and strips
ASTM A240/A240M S32304
Pressure vessels and general applications (plate, sheet and strip)
Can JIS G4304 SUS323L Be Substituted With ASTM A240/A240M S32304?
JIS G4304 SUS323L and ASTM A240/A240M S32304 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S32304 is often considered as a substitute for JIS G4304 SUS323L 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 SUS323L and ASTM A240/A240M S32304?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4304 SUS323L be substituted with ASTM A240/A240M S32304?
JIS G4304 SUS323L and ASTM A240/A240M S32304 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S32304 is often considered as a substitute for JIS G4304 SUS323L in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.