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ASTM A240/A240M S40955 vs ASTM A240/A240M S40945

Close Alternative — 83.4% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S40955 (ASTM A240/A240M:2025) and ASTM A240/A240M S40945 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S40955 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A240/A240M S40945 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A240/A240M S40955 is defined under ASTM International, originating from United States, while ASTM A240/A240M S40945 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S40955 vs ASTM A240/A240M S40945 is a 87.5% match. As per mechanical properties, the match is 75%. Combined, this makes them a close alternative overall at 83.4%.

Frequently Compared With ASTM A240/A240M S40955:
GOST 5632 06Kh23N28 EN 10088-1 1.4006 GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 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
Match Breakdown
CHEMISTRY MATCH
87.5%
MECHANICAL MATCH
75%
OVERALL
83.4%
Specifications
Property ASTM A240/A240M S40955 ASTM A240/A240M S40945
Standard ASTM A240/A240M:2025 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
Mn (%) <=1.00 <=1.00
P (%) <=0.040 <=0.040
S (%) <=0.020 <=0.030
Si (%) 1.00-2.00 <=1.00
Cr (%) 10.5-12.0 10.5-11.7
Ni (%) <=0.50 <=0.50
N (%) <=0.030 <=0.030
Nb (%) 0.20-0.50 0.18-0.40
Ti (%) 0.05-0.30 0.05-0.20
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 S40955 ASTM A240/A240M S40945
Tensile Strength >=380 MPa >=380 MPa
Yield Strength >=205 MPa >=205 MPa
Elongation >=22% >=22%
Hardness <=88 HRBW <=80 HRBW
Condition Plate, sheet and strip; yield by 0.2 percent offset Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A240/A240M S40955
Pressure vessels and general applications (plate, sheet and strip)
ASTM A240/A240M S40945
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A240/A240M S40955 Be Substituted With ASTM A240/A240M S40945?
ASTM A240/A240M S40955 and ASTM A240/A240M S40945 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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ASTM A240/A240M S40955
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S40955 and ASTM A240/A240M S40945?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S40955 be substituted with ASTM A240/A240M S40945?
ASTM A240/A240M S40955 and ASTM A240/A240M S40945 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.