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ASTM A240/A240M S20400 vs ASTM A959 201L

Close Alternative — 77.3% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S20400 (ASTM A240/A240M:2025) and ASTM A959 201L (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S20400 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 201L is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S20400 is defined under ASTM International, originating from United States, while ASTM A959 201L is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S20400 vs ASTM A959 201L is a 77.3% 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 77.3%.

Frequently Compared With ASTM A240/A240M S20400:
IS 1570 (Part 7) 12Cr12MoVH ASTM A959 .- GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12Ni2Mo EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH GOST 5632 06Kh23N28 IS 1570 (Part 7) 11Cr17Ni13W3TiH ASTM A959 201LN
Match Breakdown
CHEMISTRY MATCH
77.3%
MECHANICAL MATCH
No shared data
OVERALL
77.3%
Specifications
Property ASTM A240/A240M S20400 ASTM A959 201L
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.03
Mn (%) 7.00-9.00 5.5-7.5
P (%) <=0.040 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Cr (%) 15.0-17.0 16.0-18.0
Ni (%) 1.50-3.00 3.5-5.5
N (%) 0.15-0.30 <=0.25
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 S20400 ASTM A959 201L
Tensile Strength >=655 MPa Not specified
Yield Strength >=330 MPa Not specified
Elongation >=35% Not specified
Hardness <=241 HB Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S20400
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 201L
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can ASTM A240/A240M S20400 Be Substituted With ASTM A959 201L?
ASTM A240/A240M S20400 and ASTM A959 201L 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 S20400
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ASTM A959 201L
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S20400 and ASTM A959 201L?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S20400 be substituted with ASTM A959 201L?
ASTM A240/A240M S20400 and ASTM A959 201L 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.