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ASTM A240/A240M S31740 vs ASTM A240/A240M S31703

Close Alternative — 76% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S31740 (ASTM A240/A240M:2025) and ASTM A240/A240M S31703 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S31740 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A240/A240M S31703 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A240/A240M S31740 is defined under ASTM International, originating from United States, while ASTM A240/A240M S31703 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S31740 vs ASTM A240/A240M S31703 is a 76.5% match. As per mechanical properties, the match is 75%. Combined, this makes them a close alternative overall at 76%.

Frequently Compared With ASTM A240/A240M S31740:
GOST 5632 06Kh23N28 GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4006 IS 1570 (Part 7) 11Cr17Ni13W3TiH ASTM A959 .- EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
76.5%
MECHANICAL MATCH
75%
OVERALL
76%
Specifications
Property ASTM A240/A240M S31740 ASTM A240/A240M S31703
Standard ASTM A240/A240M:2025 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) 0.005-0.020 <=0.030
Mn (%) <=2.00 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=0.75
Cr (%) 17.0-19.0 18.0-20.0
Ni (%) 11.0-15.0 11.0-15.0
Mo (%) 3.0-4.5 3.0-4.0
N (%) 0.06-0.15 <=0.10
Nb (%) 0.20-0.50 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 S31740 ASTM A240/A240M S31703
Tensile Strength >=515 MPa >=515 MPa
Yield Strength >=205 MPa >=205 MPa
Elongation >=35% >=40%
Hardness <=217 HB <=217 HB
Condition Plate, sheet and strip; yield by 0.2 percent offset Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A240/A240M S31740
Pressure vessels and general applications (plate, sheet and strip)
ASTM A240/A240M S31703
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A240/A240M S31740 Be Substituted With ASTM A240/A240M S31703?
ASTM A240/A240M S31740 and ASTM A240/A240M S31703 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 S31740
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ASTM A240/A240M S31703
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S31740 and ASTM A240/A240M S31703?
ASTM A240/A240M S31740 specifies Nb which is not specified for ASTM A240/A240M S31703.
Can ASTM A240/A240M S31740 be substituted with ASTM A240/A240M S31703?
ASTM A240/A240M S31740 and ASTM A240/A240M S31703 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.