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ASTM A240/A240M S31727 vs JIS G4304 SUS317LN

Close Alternative — 72.3% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S31727 (ASTM A240/A240M:2025) and JIS G4304 SUS317LN (JIS G4304:2021) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S31727 is typically used for pressure vessels and general applications (plate, sheet and strip), while JIS G4304 SUS317LN is commonly used for hot-rolled stainless steel plates and strips. ASTM A240/A240M S31727 is defined under ASTM International, originating from United States, while JIS G4304 SUS317LN is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, ASTM A240/A240M S31727 vs JIS G4304 SUS317LN is a 70.9% match. As per mechanical properties, the match is 75%. Combined, this makes them a close alternative overall at 72.3%.

Frequently Compared With ASTM A240/A240M S31727:
GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 ASTM A959 .- GB/T 3280 06Cr19Ni10 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
70.9%
MECHANICAL MATCH
75%
OVERALL
72.3%
Specifications
Property ASTM A240/A240M S31727 JIS G4304 SUS317LN
Standard ASTM A240/A240M:2025 JIS G4304:2021
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
Mn (%) <=1.00 <=2.00
P (%) <=0.030 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Cr (%) 17.5-19.0 18.00-20.00
Ni (%) 14.5-16.5 11.00-15.00
Mo (%) 3.8-4.5 3.00-4.00
N (%) 0.15-0.21 0.10-0.22
Cu (%) 2.80-4.00 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 A240/A240M S31727 JIS G4304 SUS317LN
Tensile Strength >=550 MPa >=550 MPa
Yield Strength >=245 MPa >=245 MPa
Elongation >=35% >=40%
Hardness <=217 HB <=217 HB
Condition Plate, sheet and strip; yield by 0.2 percent offset Solution heat treated plate and strip; 0.2 percent proof strength applies only when specified by the purchaser
Typical Applications
ASTM A240/A240M S31727
Pressure vessels and general applications (plate, sheet and strip)
JIS G4304 SUS317LN
Hot-rolled stainless steel plates and strips
Key Differences
Can ASTM A240/A240M S31727 Be Substituted With JIS G4304 SUS317LN?
ASTM A240/A240M S31727 and JIS G4304 SUS317LN 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 S31727
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JIS G4304 SUS317LN
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S31727 and JIS G4304 SUS317LN?
ASTM A240/A240M S31727 specifies Cu which is not specified for JIS G4304 SUS317LN.
Can ASTM A240/A240M S31727 be substituted with JIS G4304 SUS317LN?
ASTM A240/A240M S31727 and JIS G4304 SUS317LN 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.