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ASTM A959 434 vs ASTM A240/A240M S43600

Strong Match — 94.8% match based on chemical composition and mechanical property overlap.

ASTM A959 434 (ASTM A959:2011) and ASTM A240/A240M S43600 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 434 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S43600 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 434 is defined under ASTM International, originating from United States, while ASTM A240/A240M S43600 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 434 vs ASTM A240/A240M S43600 is a 94.8% 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 94.8%.

Frequently Compared With ASTM A959 434:
EN 10088-1 1.4401 EN 10088-1 1.4006 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H ASTM A959 .- GOST 5632 08X18H10 IS 1570 (Part 7) 11Cr17Ni13W3TiH GOST 5632 06Kh23N28 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH GB/T 3280 06Cr19Ni10
Match Breakdown
CHEMISTRY MATCH
94.8%
MECHANICAL MATCH
No shared data
OVERALL
94.8%
Specifications
Property ASTM A959 434 ASTM A240/A240M S43600
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.12 <=0.12
Cr (%) 16.0-18.0 16.0-18.0
Mn (%) <=1.00 <=1.00
Mo (%) 0.75-1.25 0.75-1.25
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Nb (%) Not specified <=0.80
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 434 ASTM A240/A240M S43600
Tensile Strength Not specified >=450 MPa
Yield Strength Not specified >=240 MPa
Elongation Not specified >=22%
Hardness Not specified <=89 HRBW
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 434
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S43600
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 434 Be Substituted With ASTM A240/A240M S43600?
ASTM A959 434 and ASTM A240/A240M S43600 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S43600 is often considered as a substitute for ASTM A959 434 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 434
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ASTM A240/A240M S43600
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Frequently Asked Questions
What is the difference between ASTM A959 434 and ASTM A240/A240M S43600?
ASTM A240/A240M S43600 specifies Nb which is not specified for ASTM A959 434.
Can ASTM A959 434 be substituted with ASTM A240/A240M S43600?
ASTM A959 434 and ASTM A240/A240M S43600 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S43600 is often considered as a substitute for ASTM A959 434 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.