Strong Match — 89.6% match
based on chemical composition and mechanical property overlap.
JIS G4304 SUS430 (JIS G4304:2021) and ASTM A240/A240M S43000 (ASTM A240/A240M:2025) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4304 SUS430 is typically used for hot-rolled stainless steel plates and strips, while ASTM A240/A240M S43000 is commonly used for pressure vessels and general applications (plate, sheet and strip).
JIS G4304 SUS430 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A240/A240M S43000 is defined under ASTM International, originating from United States.
As per chemical composition, JIS G4304 SUS430 vs ASTM A240/A240M S43000 is a 96.9% match.
As per mechanical properties, the match is 75%.
Combined, this makes them a strong match overall at 89.6%.
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 SUS430
ASTM A240/A240M S43000
Tensile Strength
>=420 MPa
>=450 MPa
Yield Strength
>=205 MPa
>=205 MPa
Elongation
>=22%
>=22%
Hardness
<=183 HB
<=183 HB
Condition
Annealed plate and strip; proof strength applies only when specified by the purchaser
Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
JIS G4304 SUS430
Hot-rolled stainless steel plates and strips
ASTM A240/A240M S43000
Pressure vessels and general applications (plate, sheet and strip)
Can JIS G4304 SUS430 Be Substituted With ASTM A240/A240M S43000?
JIS G4304 SUS430 and ASTM A240/A240M S43000 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S43000 is often considered as a substitute for JIS G4304 SUS430 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 SUS430 and ASTM A240/A240M S43000?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4304 SUS430 be substituted with ASTM A240/A240M S43000?
JIS G4304 SUS430 and ASTM A240/A240M S43000 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S43000 is often considered as a substitute for JIS G4304 SUS430 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.