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