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ASTM A240/A240M S44400 vs JIS G4304 SUS444

Close Alternative — 74.7% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S44400 (ASTM A240/A240M:2025) and JIS G4304 SUS444 (JIS G4304:2021) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S44400 is typically used for pressure vessels and general applications (plate, sheet and strip), while JIS G4304 SUS444 is commonly used for hot-rolled stainless steel plates and strips. ASTM A240/A240M S44400 is defined under ASTM International, originating from United States, while JIS G4304 SUS444 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, ASTM A240/A240M S44400 vs JIS G4304 SUS444 is a 87.1% match. As per mechanical properties, the match is 50%. Combined, this makes them a close alternative overall at 74.7%.

Frequently Compared With ASTM A240/A240M S44400:
EN 10088-1 1.4401 EN 10088-1 1.4006 GOST 5632 08X18H10 EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH GOST 5632 06Kh23N28 ASTM A959 .- GB/T 3280 06Cr19Ni10
Match Breakdown
CHEMISTRY MATCH
87.1%
MECHANICAL MATCH
50%
OVERALL
74.7%
Specifications
Property ASTM A240/A240M S44400 JIS G4304 SUS444
Standard ASTM A240/A240M:2025 JIS G4304:2021
Category Stainless Steel Stainless Steel
C (%) <=0.025 <=0.025
Mn (%) <=1.00 <=1.00
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Cr (%) 17.5-19.5 17.00-20.00
Ni (%) <=1.00 <=0.60
Mo (%) 1.75-2.50 1.75-2.50
N (%) <=0.035 <=0.025
Ti (%) Not specified <=0.80
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A240/A240M S44400 JIS G4304 SUS444
Tensile Strength >=415 MPa >=410 MPa
Yield Strength >=275 MPa >=245 MPa
Elongation >=20% >=20%
Hardness <=217 HB <=217 HB
Condition Plate, sheet and strip; yield by 0.2 percent offset Annealed plate and strip; proof strength applies only when specified by the purchaser
Typical Applications
ASTM A240/A240M S44400
Pressure vessels and general applications (plate, sheet and strip)
JIS G4304 SUS444
Hot-rolled stainless steel plates and strips
Key Differences
Can ASTM A240/A240M S44400 Be Substituted With JIS G4304 SUS444?
ASTM A240/A240M S44400 and JIS G4304 SUS444 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.
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ASTM A240/A240M S44400
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JIS G4304 SUS444
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S44400 and JIS G4304 SUS444?
JIS G4304 SUS444 specifies Ti which is not specified for ASTM A240/A240M S44400.
Can ASTM A240/A240M S44400 be substituted with JIS G4304 SUS444?
ASTM A240/A240M S44400 and JIS G4304 SUS444 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.