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ASTM A959 630 vs JIS G4304 SUS630

Strong Match — 92.8% match based on chemical composition and mechanical property overlap.

ASTM A959 630 (ASTM A959:2011) and JIS G4304 SUS630 (JIS G4304:2021) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 630 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while JIS G4304 SUS630 is commonly used for hot-rolled stainless steel plates and strips. ASTM A959 630 is defined under ASTM International, originating from United States, while JIS G4304 SUS630 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, ASTM A959 630 vs JIS G4304 SUS630 is a 92.8% 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 92.8%.

Frequently Compared With ASTM A959 630:
GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH GB/T 3280 06Cr19Ni10 EN 10088-1 1.4845 ASTM A959 .- IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
92.8%
MECHANICAL MATCH
No shared data
OVERALL
92.8%
Specifications
Property ASTM A959 630 JIS G4304 SUS630
Standard ASTM A959:2011 JIS G4304:2021
Category Stainless Steel Stainless Steel
C (%) <=0.07 <=0.07
Cb (%) 0.15-0.45 Not specified
Cr (%) 15.0-17.0 15.00-17.50
Cu (%) 3.0-5.0 3.00-5.00
Mn (%) <=1.00 <=1.00
Ni (%) 3.0-5.0 3.00-5.00
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Nb (%) Not specified 0.15-0.45
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 630 JIS G4304 SUS630
Hardness Not specified <=363 HB
Condition Not specified Solution heat treated plate and strip (no strength values specified; aged conditions are in the blocks)
Typical Applications
ASTM A959 630
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
JIS G4304 SUS630
Hot-rolled stainless steel plates and strips
Key Differences
Can ASTM A959 630 Be Substituted With JIS G4304 SUS630?
ASTM A959 630 and JIS G4304 SUS630 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS630 is often considered as a substitute for ASTM A959 630 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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ASTM A959 630
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Frequently Asked Questions
What is the difference between ASTM A959 630 and JIS G4304 SUS630?
ASTM A959 630 specifies Cb which is not specified for JIS G4304 SUS630. JIS G4304 SUS630 specifies Nb which is not specified for ASTM A959 630.
Can ASTM A959 630 be substituted with JIS G4304 SUS630?
ASTM A959 630 and JIS G4304 SUS630 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS630 is often considered as a substitute for ASTM A959 630 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.