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ASTM A959 201LN vs ASTM A240/A240M S20400

Close Alternative — 75.1% match based on chemical composition and mechanical property overlap.

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

As per chemical composition, ASTM A959 201LN vs ASTM A240/A240M S20400 is a 75.1% 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 75.1%.

Frequently Compared With ASTM A959 201LN:
ASTM A959 .- ASTM A959 201L GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH
Match Breakdown
CHEMISTRY MATCH
75.1%
MECHANICAL MATCH
No shared data
OVERALL
75.1%
Specifications
Property ASTM A959 201LN ASTM A240/A240M S20400
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.03 <=0.030
Cr (%) 16.0-17.5 15.0-17.0
Cu (%) <=1.00 Not specified
Mn (%) 6.4-7.5 7.00-9.00
N (%) 0.10-0.25 0.15-0.30
Ni (%) 4.0-5.0 1.50-3.00
P (%) <=0.045 <=0.040
S (%) <=0.015 <=0.030
Si (%) <=1.00 <=1.00
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 201LN ASTM A240/A240M S20400
Tensile Strength Not specified >=655 MPa
Yield Strength Not specified >=330 MPa
Elongation Not specified >=35%
Hardness Not specified <=241 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 201LN
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S20400
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 201LN Be Substituted With ASTM A240/A240M S20400?
ASTM A959 201LN and ASTM A240/A240M S20400 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 A959 201LN
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ASTM A240/A240M S20400
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Frequently Asked Questions
What is the difference between ASTM A959 201LN and ASTM A240/A240M S20400?
ASTM A959 201LN specifies Cu which is not specified for ASTM A240/A240M S20400.
Can ASTM A959 201LN be substituted with ASTM A240/A240M S20400?
ASTM A959 201LN and ASTM A240/A240M S20400 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.