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ASTM A959 S40930 vs ASTM A240/A240M S40920

Strong Match — 91.7% match based on chemical composition and mechanical property overlap.

ASTM A959 S40930 (ASTM A959:2011) and ASTM A240/A240M S40920 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S40930 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S40920 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S40930 is defined under ASTM International, originating from United States, while ASTM A240/A240M S40920 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S40930 vs ASTM A240/A240M S40920 is a 91.7% 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 91.7%.

Frequently Compared With ASTM A959 S40930:
ASTM A959 .- 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 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr13H GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
91.7%
MECHANICAL MATCH
No shared data
OVERALL
91.7%
Specifications
Property ASTM A959 S40930 ASTM A240/A240M S40920
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
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 0.15-0.50
Nb (%) Not specified <=0.10
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 S40930 ASTM A240/A240M S40920
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 S40930
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S40920
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 S40930 Be Substituted With ASTM A240/A240M S40920?
ASTM A959 S40930 and ASTM A240/A240M S40920 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S40920 is often considered as a substitute for ASTM A959 S40930 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 S40930
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ASTM A240/A240M S40920
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Frequently Asked Questions
What is the difference between ASTM A959 S40930 and ASTM A240/A240M S40920?
ASTM A240/A240M S40920 specifies Ti, Nb which are not specified for ASTM A959 S40930.
Can ASTM A959 S40930 be substituted with ASTM A240/A240M S40920?
ASTM A959 S40930 and ASTM A240/A240M S40920 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S40920 is often considered as a substitute for ASTM A959 S40930 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.