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ASTM A959 635 vs JIS G4304 SUS631

Strong Match — 85.1% match based on chemical composition and mechanical property overlap.

ASTM A959 635 (ASTM A959:2011) and JIS G4304 SUS631 (JIS G4304:2021) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 635 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while JIS G4304 SUS631 is commonly used for hot-rolled stainless steel plates and strips. ASTM A959 635 is defined under ASTM International, originating from United States, while JIS G4304 SUS631 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, ASTM A959 635 vs JIS G4304 SUS631 is a 85.1% 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 85.1%.

Frequently Compared With ASTM A959 635:
GB/T 3280 06Cr19Ni10 ASTM A959 .- GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
85.1%
MECHANICAL MATCH
No shared data
OVERALL
85.1%
Specifications
Property ASTM A959 635 JIS G4304 SUS631
Standard ASTM A959:2011 JIS G4304:2021
Category Stainless Steel Stainless Steel
Al (%) <=0.40 0.75-1.50
C (%) <=0.08 <=0.09
Cr (%) 16.0-17.5 16.00-18.00
Mn (%) <=1.00 <=1.00
Ni (%) 6.0-7.5 6.50-7.75
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Ti (%) 0.40-1.20 Not specified
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 635 JIS G4304 SUS631
Tensile Strength Not specified <=1030 MPa
Yield Strength Not specified <=380 MPa
Elongation Not specified >=20%
Hardness Not specified <=192 HB
Condition Not specified Solution heat treated plate and strip; proof strength applies only when specified by the purchaser
Typical Applications
ASTM A959 635
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
JIS G4304 SUS631
Hot-rolled stainless steel plates and strips
Key Differences
Can ASTM A959 635 Be Substituted With JIS G4304 SUS631?
ASTM A959 635 and JIS G4304 SUS631 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS631 is often considered as a substitute for ASTM A959 635 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 635
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JIS G4304 SUS631
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Frequently Asked Questions
What is the difference between ASTM A959 635 and JIS G4304 SUS631?
ASTM A959 635 specifies Ti which is not specified for JIS G4304 SUS631.
Can ASTM A959 635 be substituted with JIS G4304 SUS631?
ASTM A959 635 and JIS G4304 SUS631 overlap closely enough on chemistry and mechanical properties that JIS G4304 SUS631 is often considered as a substitute for ASTM A959 635 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.