Strong Match — 94.4% match
based on chemical composition and mechanical property overlap.
BS 970 (Part 1) 430S17 (BS 970 (Part 1):1983) and JIS G4304 SUS430 (JIS G4304:2021) are both steel grades.
Both fall under the Stainless Steel category.
BS 970 (Part 1) 430S17 is typically used for stainless and heat resisting steel for mechanical and allied engineering purposes (table 13)., while JIS G4304 SUS430 is commonly used for hot-rolled stainless steel plates and strips.
BS 970 (Part 1) 430S17 is defined under British Standards (BS), originating from United Kingdom, while JIS G4304 SUS430 is defined under Japanese Industrial Standards (JIS), originating from Japan.
As per chemical composition, BS 970 (Part 1) 430S17 vs JIS G4304 SUS430 is a 94.4% 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 94.4%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
BS 970 (Part 1) 430S17
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
BS 970 (Part 1) 430S17
Stainless and heat resisting steel for mechanical and allied engineering purposes (Table 13).
JIS G4304 SUS430
Hot-rolled stainless steel plates and strips
Can BS 970 (Part 1) 430S17 Be Substituted With JIS G4304 SUS430?
BS 970 (Part 1) 430S17 and JIS G4304 SUS430 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS430 is often considered as a substitute for BS 970 (Part 1) 430S17 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 BS 970 (Part 1) 430S17 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 BS 970 (Part 1) 430S17 be substituted with JIS G4304 SUS430?
BS 970 (Part 1) 430S17 and JIS G4304 SUS430 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS430 is often considered as a substitute for BS 970 (Part 1) 430S17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.