Strong Match — 85.6% match
based on chemical composition and mechanical property overlap.
JIS G4304 SUS303 (JIS G4304:2021) and EN 10088-1 X6CrNiCuS18-9-2 (EN 10088-1:2014) are both steel grades.
Both fall under the Stainless Steel category.
JIS G4304 SUS303 is defined under Japanese Industrial Standards (JIS), originating from Japan, while EN 10088-1 X6CrNiCuS18-9-2 is defined under European Standard (EN), originating from Europe.
As per chemical composition, JIS G4304 SUS303 vs EN 10088-1 X6CrNiCuS18-9-2 is a 85.6% 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 85.6%.
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 SUS303
EN 10088-1 X6CrNiCuS18-9-2
Tensile Strength
>=520 MPa
Not specified
Yield Strength
>=205 MPa
Not specified
Elongation
>=35%
Not specified
Hardness
<=187 HB
Not specified
Condition
Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser
Not specified
Typical Applications
JIS G4304 SUS303
Hot-rolled stainless steel plates and strips
EN 10088-1 X6CrNiCuS18-9-2
Not documented
Key Differences
EN 10088-1 X6CrNiCuS18-9-2 specifies N, Cu which are not specified for JIS G4304 SUS303.
Can JIS G4304 SUS303 Be Substituted With EN 10088-1 X6CrNiCuS18-9-2?
JIS G4304 SUS303 and EN 10088-1 X6CrNiCuS18-9-2 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X6CrNiCuS18-9-2 is often considered as a substitute for JIS G4304 SUS303 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 SUS303 and EN 10088-1 X6CrNiCuS18-9-2?
EN 10088-1 X6CrNiCuS18-9-2 specifies N, Cu which are not specified for JIS G4304 SUS303.
Can JIS G4304 SUS303 be substituted with EN 10088-1 X6CrNiCuS18-9-2?
JIS G4304 SUS303 and EN 10088-1 X6CrNiCuS18-9-2 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X6CrNiCuS18-9-2 is often considered as a substitute for JIS G4304 SUS303 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.