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ASTM A240/A240M N08020 vs ASTM A959 N08020

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

ASTM A240/A240M N08020 (ASTM A240/A240M:2025) and ASTM A959 N08020 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M N08020 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 N08020 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M N08020 is defined under ASTM International, originating from United States, while ASTM A959 N08020 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M N08020 vs ASTM A959 N08020 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 N08020:
IS 1570 (Part 7) 12Cr12MoH GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 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 IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
94.7%
MECHANICAL MATCH
No shared data
OVERALL
94.7%
Specifications
Property ASTM A240/A240M N08020 ASTM A959 N08020
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.07 <=0.07
Mn (%) <=2.00 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.035 <=0.035
Si (%) <=1.00 <=1.00
Cr (%) 19.0-21.0 19.0-21.0
Ni (%) 32.0-38.0 32.0-38.0
Mo (%) 2.00-3.00 2.00-3.00
Cu (%) 3.00-4.00 3.0-4.0
Nb (%) <=1.00 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 N08020 ASTM A959 N08020
Tensile Strength >=550 MPa Not specified
Yield Strength >=240 MPa Not specified
Elongation >=30% Not specified
Hardness <=217 HB Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M N08020
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 N08020
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A240/A240M N08020 Be Substituted With ASTM A959 N08020?
ASTM A240/A240M N08020 and ASTM A959 N08020 overlap closely enough on chemistry and mechanical properties that ASTM A959 N08020 is often considered as a substitute for ASTM A240/A240M N08020 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 N08020
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ASTM A959 N08020
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Frequently Asked Questions
What is the difference between ASTM A240/A240M N08020 and ASTM A959 N08020?
ASTM A240/A240M N08020 specifies Nb which is not specified for ASTM A959 N08020.
Can ASTM A240/A240M N08020 be substituted with ASTM A959 N08020?
ASTM A240/A240M N08020 and ASTM A959 N08020 overlap closely enough on chemistry and mechanical properties that ASTM A959 N08020 is often considered as a substitute for ASTM A240/A240M N08020 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.