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ASTM A240/A240M N08800 vs ASTM A959 N08811

Strong Match — 94.7% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M N08800 (ASTM A240/A240M:2025) and ASTM A959 N08811 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M N08800 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 N08811 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M N08800 is defined under ASTM International, originating from United States, while ASTM A959 N08811 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M N08800 vs ASTM A959 N08811 is a 94.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 94.7%.

Frequently Compared With ASTM A240/A240M N08800:
EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
94.7%
MECHANICAL MATCH
No shared data
OVERALL
94.7%
Specifications
Property ASTM A240/A240M N08800 ASTM A959 N08811
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.10 0.06-0.10
Mn (%) <=1.50 <=1.50
P (%) <=0.045 <=0.040
S (%) <=0.015 <=0.015
Si (%) <=1.00 <=1.00
Cr (%) 19.0-23.0 19.0-23.0
Ni (%) 30.0-35.0 30.0-35.0
Cu (%) <=0.75 <=0.75
Fe (%) >=39.5 >=39.5
Al (%) 0.15-0.60 0.15-0.60
Ti (%) 0.15-0.60 0.15-0.60
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 N08800 ASTM A959 N08811
Tensile Strength >=520 MPa Not specified
Yield Strength >=205 MPa Not specified
Elongation >=30% Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M N08800
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 N08811
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can ASTM A240/A240M N08800 Be Substituted With ASTM A959 N08811?
ASTM A240/A240M N08800 and ASTM A959 N08811 overlap closely enough on chemistry and mechanical properties that ASTM A959 N08811 is often considered as a substitute for ASTM A240/A240M N08800 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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ASTM A240/A240M N08800
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ASTM A959 N08811
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Frequently Asked Questions
What is the difference between ASTM A240/A240M N08800 and ASTM A959 N08811?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M N08800 be substituted with ASTM A959 N08811?
ASTM A240/A240M N08800 and ASTM A959 N08811 overlap closely enough on chemistry and mechanical properties that ASTM A959 N08811 is often considered as a substitute for ASTM A240/A240M N08800 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.