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ASTM A240/A240M S20100 vs ASTM A959 202

Strong Match — 85.6% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S20100 (ASTM A240/A240M:2025) and ASTM A959 202 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S20100 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 202 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S20100 is defined under ASTM International, originating from United States, while ASTM A959 202 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S20100 vs ASTM A959 202 is a 85.6% 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 85.6%.

Frequently Compared With ASTM A240/A240M S20100:
ASTM A959 201 EN 10088-1 1.4006 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH GB/T 3280 06Cr19Ni10 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
85.6%
MECHANICAL MATCH
No shared data
OVERALL
85.6%
Specifications
Property ASTM A240/A240M S20100 ASTM A959 202
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.15 <=0.15
Mn (%) 5.50-7.50 7.5-10.0
P (%) <=0.060 <=0.060
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Cr (%) 16.0-18.0 17.0-19.0
Ni (%) 3.5-5.5 4.0-6.0
N (%) <=0.25 <=0.25
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 S20100 ASTM A959 202
Tensile Strength >=515 MPa Not specified
Yield Strength >=260 MPa Not specified
Elongation >=40% Not specified
Hardness <=217 HB Not specified
Condition Type 201-1 (first condition printed); yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S20100
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 202
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can ASTM A240/A240M S20100 Be Substituted With ASTM A959 202?
ASTM A240/A240M S20100 and ASTM A959 202 overlap closely enough on chemistry and mechanical properties that ASTM A959 202 is often considered as a substitute for ASTM A240/A240M S20100 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
ASTM A240/A240M S20100
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ASTM A959 202
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S20100 and ASTM A959 202?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S20100 be substituted with ASTM A959 202?
ASTM A240/A240M S20100 and ASTM A959 202 overlap closely enough on chemistry and mechanical properties that ASTM A959 202 is often considered as a substitute for ASTM A240/A240M S20100 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.