Strong Match — 93.3% match
based on chemical composition and mechanical property overlap.
ASTM A240/A240M S43000 (ASTM A240/A240M:2025) and JIS G4305 SUS429 (JIS G4305:2012) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A240/A240M S43000 is typically used for pressure vessels and general applications (plate, sheet and strip), while JIS G4305 SUS429 is commonly used for cold-rolled stainless steel plates, sheet and strip.
ASTM A240/A240M S43000 is defined under ASTM International, originating from United States, while JIS G4305 SUS429 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, ASTM A240/A240M S43000 vs JIS G4305 SUS429 is a 90% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 93.3%.
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 S43000
JIS G4305 SUS429
Tensile Strength
>=450 MPa
>=450 MPa
Yield Strength
>=205 MPa
>=205 MPa
Elongation
>=22%
>=22%
Hardness
<=183 HB
<=183 HB
Condition
Plate, sheet and strip; yield by 0.2 percent offset
Annealed plate and strip; proof strength applies only when specified by the purchaser
Typical Applications
ASTM A240/A240M S43000
Pressure vessels and general applications (plate, sheet and strip)
JIS G4305 SUS429
Cold-rolled stainless steel plates, sheet and strip
Can ASTM A240/A240M S43000 Be Substituted With JIS G4305 SUS429?
ASTM A240/A240M S43000 and JIS G4305 SUS429 overlap closely enough on chemistry and mechanical properties that JIS G4305 SUS429 is often considered as a substitute for ASTM A240/A240M S43000 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 S43000 and JIS G4305 SUS429?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S43000 be substituted with JIS G4305 SUS429?
ASTM A240/A240M S43000 and JIS G4305 SUS429 overlap closely enough on chemistry and mechanical properties that JIS G4305 SUS429 is often considered as a substitute for ASTM A240/A240M S43000 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.