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ASTM A240/A240M S40945 vs ASTM A240/A240M S40955

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

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

As per chemical composition, ASTM A240/A240M S40945 vs ASTM A240/A240M S40955 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 S40945:
GOST 5632 06Kh23N28 EN 10088-1 1.4301 GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4006 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 ASTM A959 .-
Match Breakdown
CHEMISTRY MATCH
87.5%
MECHANICAL MATCH
75%
OVERALL
83.4%
Specifications
Property ASTM A240/A240M S40945 ASTM A240/A240M S40955
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 (%) <=0.030 <=0.020
Si (%) <=1.00 1.00-2.00
Cr (%) 10.5-11.7 10.5-12.0
Ni (%) <=0.50 <=0.50
N (%) <=0.030 <=0.030
Nb (%) 0.18-0.40 0.20-0.50
Ti (%) 0.05-0.20 0.05-0.30
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 S40945 ASTM A240/A240M S40955
Tensile Strength >=380 MPa >=380 MPa
Yield Strength >=205 MPa >=205 MPa
Elongation >=22% >=22%
Hardness <=80 HRBW <=88 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 S40945
Pressure vessels and general applications (plate, sheet and strip)
ASTM A240/A240M S40955
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A240/A240M S40945 Be Substituted With ASTM A240/A240M S40955?
ASTM A240/A240M S40945 and ASTM A240/A240M S40955 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 S40945
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S40945 and ASTM A240/A240M S40955?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S40945 be substituted with ASTM A240/A240M S40955?
ASTM A240/A240M S40945 and ASTM A240/A240M S40955 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.