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JIS G4305 SUS304 vs ASTM A959 XM-21

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

JIS G4305 SUS304 (JIS G4305:2012) and ASTM A959 XM-21 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. JIS G4305 SUS304 is typically used for cold-rolled stainless steel plates, sheet and strip, while ASTM A959 XM-21 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). JIS G4305 SUS304 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A959 XM-21 is defined under ASTM International, originating from United States.

As per chemical composition, JIS G4305 SUS304 vs ASTM A959 XM-21 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 JIS G4305 SUS304:
EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
92.8%
MECHANICAL MATCH
No shared data
OVERALL
92.8%
Specifications
Property JIS G4305 SUS304 ASTM A959 XM-21
Standard JIS G4305:2012 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.08 <=0.08
Si (%) <=1.00 <=1.00
Mn (%) <=2.00 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Ni (%) 8.00-10.50 8.0-10.0
Cr (%) 18.00-20.00 18.0-20.0
N (%) Not specified 0.16-0.30
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G4305 SUS304 ASTM A959 XM-21
Tensile Strength >=520 MPa Not specified
Yield Strength >=205 MPa Not specified
Elongation >=40% 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 G4305 SUS304
Cold-rolled stainless steel plates, sheet and strip
ASTM A959 XM-21
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can JIS G4305 SUS304 Be Substituted With ASTM A959 XM-21?
JIS G4305 SUS304 and ASTM A959 XM-21 overlap closely enough on chemistry and mechanical properties that ASTM A959 XM-21 is often considered as a substitute for JIS G4305 SUS304 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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JIS G4305 SUS304
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ASTM A959 XM-21
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Frequently Asked Questions
What is the difference between JIS G4305 SUS304 and ASTM A959 XM-21?
ASTM A959 XM-21 specifies N which is not specified for JIS G4305 SUS304.
Can JIS G4305 SUS304 be substituted with ASTM A959 XM-21?
JIS G4305 SUS304 and ASTM A959 XM-21 overlap closely enough on chemistry and mechanical properties that ASTM A959 XM-21 is often considered as a substitute for JIS G4305 SUS304 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.