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ASTM A959 XM-17 vs ASTM A240/A240M S21600

Strong Match — 95.8% match based on chemical composition and mechanical property overlap.

ASTM A959 XM-17 (ASTM A959:2011) and ASTM A240/A240M S21600 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 XM-17 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S21600 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 XM-17 is defined under ASTM International, originating from United States, while ASTM A240/A240M S21600 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 XM-17 vs ASTM A240/A240M S21600 is a 95.8% 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 95.8%.

Frequently Compared With ASTM A959 XM-17:
EN 10088-1 1.4845 GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4301 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 .- EN 10088-1 1.4006 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
95.8%
MECHANICAL MATCH
No shared data
OVERALL
95.8%
Specifications
Property ASTM A959 XM-17 ASTM A240/A240M S21600
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.08 <=0.08
Cr (%) 17.5-20.5 17.5-22.0
Mn (%) 7.5-9.0 7.50-9.00
Mo (%) 2.00-3.00 2.00-3.00
N (%) 0.25-0.50 0.25-0.50
Ni (%) 5.0-7.0 5.0-7.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=0.75
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 XM-17 ASTM A240/A240M S21600
Tensile Strength Not specified >=690 MPa
Yield Strength Not specified >=415 MPa
Elongation Not specified >=40%
Hardness Not specified <=241 HB
Condition Not specified Sheet and strip (first condition printed); yield by 0.2 percent offset
Typical Applications
ASTM A959 XM-17
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S21600
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A959 XM-17 Be Substituted With ASTM A240/A240M S21600?
ASTM A959 XM-17 and ASTM A240/A240M S21600 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S21600 is often considered as a substitute for ASTM A959 XM-17 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 XM-17
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ASTM A240/A240M S21600
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Frequently Asked Questions
What is the difference between ASTM A959 XM-17 and ASTM A240/A240M S21600?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 XM-17 be substituted with ASTM A240/A240M S21600?
ASTM A959 XM-17 and ASTM A240/A240M S21600 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S21600 is often considered as a substitute for ASTM A959 XM-17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.