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ASTM A959 S38815 vs ASTM A240/A240M S31730

Related Material — 68.3% match based on chemical composition and mechanical property overlap.

ASTM A959 S38815 (ASTM A959:2011) and ASTM A240/A240M S31730 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S38815 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S31730 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S38815 is defined under ASTM International, originating from United States, while ASTM A240/A240M S31730 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S38815 vs ASTM A240/A240M S31730 is a 68.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 68.3%.

Frequently Compared With ASTM A959 S38815:
ASTM A959 .- EN 10088-1 1.4301 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12Ni2Mo GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH GOST 5632 08X18H10 EN 10088-1 1.4845
Match Breakdown
CHEMISTRY MATCH
68.3%
MECHANICAL MATCH
No shared data
OVERALL
68.3%
Specifications
Property ASTM A959 S38815 ASTM A240/A240M S31730
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
Al (%) <=0.30 Not specified
C (%) <=0.030 <=0.030
Cr (%) 13.0-15.0 17.0-19.0
Cu (%) 0.75-1.50 4.0-5.0
Mn (%) <=2.00 <=2.00
Mo (%) 0.75-1.50 3.0-4.0
Ni (%) 15.0-17.0 15.0-16.5
P (%) <=0.045 <=0.040
S (%) <=0.020 <=0.010
Si (%) 5.5-6.5 <=1.00
N (%) Not specified <=0.045
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A959 S38815 ASTM A240/A240M S31730
Tensile Strength Not specified >=480 MPa
Yield Strength Not specified >=175 MPa
Elongation Not specified >=35%
Hardness Not specified <=90 HRBW
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 S38815
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S31730
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 S38815 Be Substituted With ASTM A240/A240M S31730?
ASTM A959 S38815 and ASTM A240/A240M S31730 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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ASTM A959 S38815
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ASTM A240/A240M S31730
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Frequently Asked Questions
What is the difference between ASTM A959 S38815 and ASTM A240/A240M S31730?
ASTM A959 S38815 specifies Al which is not specified for ASTM A240/A240M S31730. ASTM A240/A240M S31730 specifies N which is not specified for ASTM A959 S38815.
Can ASTM A959 S38815 be substituted with ASTM A240/A240M S31730?
ASTM A959 S38815 and ASTM A240/A240M S31730 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.