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ASTM A959 443 vs ASTM A240/A240M S44200

Strong Match — 95.1% match based on chemical composition and mechanical property overlap.

ASTM A959 443 (ASTM A959:2011) and ASTM A240/A240M S44200 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 443 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S44200 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 443 is defined under ASTM International, originating from United States, while ASTM A240/A240M S44200 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 443 vs ASTM A240/A240M S44200 is a 95.1% 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 95.1%.

Frequently Compared With ASTM A959 443:
EN 10088-1 1.4006 EN 10088-1 1.4845 GB/T 3280 06Cr19Ni10 EN 10088-1 1.4301 EN 10088-1 1.4401 GOST 5632 06Kh23N28 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H ASTM A959 .-
Match Breakdown
CHEMISTRY MATCH
95.1%
MECHANICAL MATCH
No shared data
OVERALL
95.1%
Specifications
Property ASTM A959 443 ASTM A240/A240M S44200
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.20 <=0.20
Cr (%) 18.0-23.0 18.0-23.0
Cu (%) 0.90-1.25 Not specified
Mn (%) <=1.00 <=1.00
Ni (%) <=0.50 <=0.60
P (%) <=0.040 <=0.040
S (%) <=0.030 <=0.040
Si (%) <=1.00 <=1.00
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 443 ASTM A240/A240M S44200
Tensile Strength Not specified >=515 MPa
Yield Strength Not specified >=275 MPa
Elongation Not specified >=20%
Hardness Not specified <=217 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 443
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S44200
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 443 Be Substituted With ASTM A240/A240M S44200?
ASTM A959 443 and ASTM A240/A240M S44200 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S44200 is often considered as a substitute for ASTM A959 443 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 443
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ASTM A240/A240M S44200
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Frequently Asked Questions
What is the difference between ASTM A959 443 and ASTM A240/A240M S44200?
ASTM A959 443 specifies Cu which is not specified for ASTM A240/A240M S44200.
Can ASTM A959 443 be substituted with ASTM A240/A240M S44200?
ASTM A959 443 and ASTM A240/A240M S44200 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S44200 is often considered as a substitute for ASTM A959 443 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.