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ASTM A240/A240M S44626 vs ASTM A959 XM-33

Strong Match — 94.4% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S44626 (ASTM A240/A240M:2025) and ASTM A959 XM-33 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S44626 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 XM-33 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S44626 is defined under ASTM International, originating from United States, while ASTM A959 XM-33 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S44626 vs ASTM A959 XM-33 is a 94.4% 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 94.4%.

Frequently Compared With ASTM A240/A240M S44626:
IS 1570 (Part 7) 12Cr12Ni2Mo EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4845 GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH ASTM A959 .-
Match Breakdown
CHEMISTRY MATCH
94.4%
MECHANICAL MATCH
No shared data
OVERALL
94.4%
Specifications
Property ASTM A240/A240M S44626 ASTM A959 XM-33
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.06 <=0.06
Mn (%) <=0.75 <=0.75
P (%) <=0.040 <=0.040
S (%) <=0.020 <=0.020
Si (%) <=0.75 <=0.75
Cr (%) 25.0-27.0 25.0-27.0
Ni (%) <=0.50 <=0.50
Mo (%) 0.75-1.50 0.75-1.50
N (%) <=0.04 <=0.040
Cu (%) <=0.20 <=0.20
Ti (%) 0.20-1.00 Not specified
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 S44626 ASTM A959 XM-33
Tensile Strength >=470 MPa Not specified
Yield Strength >=310 MPa Not specified
Elongation >=20% Not specified
Hardness <=217 HB Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S44626
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 XM-33
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A240/A240M S44626 Be Substituted With ASTM A959 XM-33?
ASTM A240/A240M S44626 and ASTM A959 XM-33 overlap closely enough on chemistry and mechanical properties that ASTM A959 XM-33 is often considered as a substitute for ASTM A240/A240M S44626 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 S44626
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ASTM A959 XM-33
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S44626 and ASTM A959 XM-33?
ASTM A240/A240M S44626 specifies Ti which is not specified for ASTM A959 XM-33.
Can ASTM A240/A240M S44626 be substituted with ASTM A959 XM-33?
ASTM A240/A240M S44626 and ASTM A959 XM-33 overlap closely enough on chemistry and mechanical properties that ASTM A959 XM-33 is often considered as a substitute for ASTM A240/A240M S44626 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.