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ASTM A959 S40920 vs ASTM A240/A240M S40910

Strong Match — 91.1% match based on chemical composition and mechanical property overlap.

ASTM A959 S40920 (ASTM A959:2011) and ASTM A240/A240M S40910 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S40920 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S40910 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S40920 is defined under ASTM International, originating from United States, while ASTM A240/A240M S40910 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S40920 vs ASTM A240/A240M S40910 is a 91.1% 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 91.1%.

Frequently Compared With ASTM A959 S40920:
IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 .- EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr13H EN 10088-1 1.4301 GOST 5632 08X18H10 GOST 5632 06Kh23N28 EN 10088-1 1.4006 IS 1570 (Part 7) 11Cr17Ni13W3TiH GB/T 3280 06Cr19Ni10 EN 10088-1 1.4401
Match Breakdown
CHEMISTRY MATCH
91.1%
MECHANICAL MATCH
No shared data
OVERALL
91.1%
Specifications
Property ASTM A959 S40920 ASTM A240/A240M S40910
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
Cb (%) <=0.10 Not specified
Cr (%) 10.5-11.7 10.5-11.7
Mn (%) <=1.00 <=1.00
N (%) <=0.030 <=0.030
Ni (%) <=0.50 <=0.50
P (%) <=0.040 <=0.040
S (%) <=0.020 <=0.020
Si (%) <=1.00 <=1.00
Ti (%) Not specified <=0.50
Nb (%) Not specified <=0.17
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 S40920 ASTM A240/A240M S40910
Tensile Strength Not specified >=380 MPa
Yield Strength Not specified >=170 MPa
Elongation Not specified >=20%
Hardness Not specified <=179 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 S40920
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S40910
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 S40920 Be Substituted With ASTM A240/A240M S40910?
ASTM A959 S40920 and ASTM A240/A240M S40910 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S40910 is often considered as a substitute for ASTM A959 S40920 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 A959 S40920
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ASTM A240/A240M S40910
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Frequently Asked Questions
What is the difference between ASTM A959 S40920 and ASTM A240/A240M S40910?
ASTM A959 S40920 specifies Cb which is not specified for ASTM A240/A240M S40910. ASTM A240/A240M S40910 specifies Ti, Nb which are not specified for ASTM A959 S40920.
Can ASTM A959 S40920 be substituted with ASTM A240/A240M S40910?
ASTM A959 S40920 and ASTM A240/A240M S40910 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S40910 is often considered as a substitute for ASTM A959 S40920 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.