Strong Match — 86.3% match
based on chemical composition and mechanical property overlap.
ASTM A959 442 (ASTM A959:2011) and JIS G4304 SUS430 (JIS G4304:2021) are both steel grades.
Both fall under the Stainless Steel category.
ASTM A959 442 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while JIS G4304 SUS430 is commonly used for hot-rolled stainless steel plates and strips.
ASTM A959 442 is defined under ASTM International, originating from United States, while JIS G4304 SUS430 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, ASTM A959 442 vs JIS G4304 SUS430 is a 86.3% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a strong match overall at 86.3%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A959 442
JIS G4304 SUS430
Tensile Strength
Not specified
>=420 MPa
Yield Strength
Not specified
>=205 MPa
Elongation
Not specified
>=22%
Hardness
Not specified
<=183 HB
Condition
Not specified
Annealed plate and strip; proof strength applies only when specified by the purchaser
Typical Applications
ASTM A959 442
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
JIS G4304 SUS430
Hot-rolled stainless steel plates and strips
Can ASTM A959 442 Be Substituted With JIS G4304 SUS430?
ASTM A959 442 and JIS G4304 SUS430 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS430 is often considered as a substitute for ASTM A959 442 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 A959 442 and JIS G4304 SUS430?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 442 be substituted with JIS G4304 SUS430?
ASTM A959 442 and JIS G4304 SUS430 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS430 is often considered as a substitute for ASTM A959 442 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.