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ASTM A240/A240M S41008 vs ASTM A959 405

Strong Match — 93.1% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S41008 (ASTM A240/A240M:2025) and ASTM A959 405 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S41008 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 405 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S41008 is defined under ASTM International, originating from United States, while ASTM A959 405 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S41008 vs ASTM A959 405 is a 93.1% 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 93.1%.

Frequently Compared With ASTM A240/A240M S41008:
IS 1570 (Part 7) 12Cr12MoVH GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12Ni2Mo GB/T 3280 06Cr19Ni10 EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12MoH ASTM A959 .-
Match Breakdown
CHEMISTRY MATCH
93.1%
MECHANICAL MATCH
No shared data
OVERALL
93.1%
Specifications
Property ASTM A240/A240M S41008 ASTM A959 405
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.08 <=0.08
Mn (%) <=1.00 <=1.00
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Cr (%) 11.5-13.5 11.5-14.5
Ni (%) <=0.60 <=0.50
Al (%) Not specified 0.10-0.30
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 S41008 ASTM A959 405
Tensile Strength >=415 MPa Not specified
Yield Strength >=205 MPa Not specified
Elongation >=22% Not specified
Hardness <=183 HB Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S41008
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 405
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A240/A240M S41008 Be Substituted With ASTM A959 405?
ASTM A240/A240M S41008 and ASTM A959 405 overlap closely enough on chemistry and mechanical properties that ASTM A959 405 is often considered as a substitute for ASTM A240/A240M S41008 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 S41008
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ASTM A959 405
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S41008 and ASTM A959 405?
ASTM A959 405 specifies Al which is not specified for ASTM A240/A240M S41008.
Can ASTM A240/A240M S41008 be substituted with ASTM A959 405?
ASTM A240/A240M S41008 and ASTM A959 405 overlap closely enough on chemistry and mechanical properties that ASTM A959 405 is often considered as a substitute for ASTM A240/A240M S41008 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.