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JIS G4303 SUS304 vs ASTM A959 S30430

Close Alternative — 74.6% match based on chemical composition and mechanical property overlap.

JIS G4303 SUS304 (JIS G4303:2021) and ASTM A959 S30430 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. JIS G4303 SUS304 is typically used for food equipment, chemical vessels, architectural applications, while ASTM A959 S30430 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). JIS G4303 SUS304 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A959 S30430 is defined under ASTM International, originating from United States.

As per chemical composition, JIS G4303 SUS304 vs ASTM A959 S30430 is a 74.6% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 74.6%.

Frequently Compared With JIS G4303 SUS304:
EN 10088-1 1.4845 EN 10088-1 1.4301 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 GB/T 3280 06Cr19Ni10 EN 10088-1 1.4401 GOST 5632 12Kh13 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH ASTM A959 .- IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
74.6%
MECHANICAL MATCH
No shared data
OVERALL
74.6%
Specifications
Property JIS G4303 SUS304 ASTM A959 S30430
Standard JIS G4303:2021 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) ≤0.08 <=0.03
Si (%) ≤1.00 <=1.00
Mn (%) ≤2.00 <=2.00
Cr (%) 18.0–20.0 17.0-19.0
Ni (%) 8.0–10.5 8.0-10.0
P (%) ≤0.045 <=0.045
S (%) ≤0.030 <=0.030
Cu (%) Not specified 3.0-4.0
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G4303 SUS304 ASTM A959 S30430
Tensile Strength ≥520 MPa Not specified
Yield Strength ≥205 MPa Not specified
Elongation ≥40% Not specified
Hardness ≤187 HB Not specified
Typical Applications
JIS G4303 SUS304
Food equipment, chemical vessels, architectural applications
ASTM A959 S30430
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can JIS G4303 SUS304 Be Substituted With ASTM A959 S30430?
JIS G4303 SUS304 and ASTM A959 S30430 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
Forms & Sizes Available on M-EX
JIS G4303 SUS304
Sheet → (3 listings)
Thickness: 6–6 mm (0.24–0.24 in)
Width: 1250–1250 mm (49.21–49.21 in)
Length: 2500–4000 mm (98.43–157.48 in)
ASTM A959 S30430
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On M-EX Right Now
JIS G4303 SUS304
3 active listings and RFQs →
ASTM A959 S30430
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Frequently Asked Questions
What is the difference between JIS G4303 SUS304 and ASTM A959 S30430?
ASTM A959 S30430 specifies Cu which is not specified for JIS G4303 SUS304.
Can JIS G4303 SUS304 be substituted with ASTM A959 S30430?
JIS G4303 SUS304 and ASTM A959 S30430 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.