Post Stock Login Register

ASTM A240/A240M S40977 vs ASTM A959 S40977

Strong Match — 100% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S40977 (ASTM A240/A240M:2025) and ASTM A959 S40977 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S40977 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 S40977 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S40977 is defined under ASTM International, originating from United States, while ASTM A959 S40977 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S40977 vs ASTM A959 S40977 is a 100% 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 100%.

Frequently Compared With ASTM A240/A240M S40977:
IS 1570 (Part 7) 12Cr12MoVH GOST 5632 06Kh23N28 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr13H
Match Breakdown
CHEMISTRY MATCH
100%
MECHANICAL MATCH
No shared data
OVERALL
100%
Specifications
Property ASTM A240/A240M S40977 ASTM A959 S40977
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.030
Mn (%) <=1.50 <=1.50
P (%) <=0.040 <=0.040
S (%) <=0.015 <=0.015
Si (%) <=1.00 <=1.00
Cr (%) 10.5-12.5 10.5-12.5
Ni (%) 0.30-1.00 0.30-1.00
N (%) <=0.030 <=0.030
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 S40977 ASTM A959 S40977
Tensile Strength >=450 MPa Not specified
Yield Strength >=280 MPa Not specified
Elongation >=18% Not specified
Hardness <=180 HB Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S40977
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 S40977
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Can ASTM A240/A240M S40977 Be Substituted With ASTM A959 S40977?
ASTM A240/A240M S40977 and ASTM A959 S40977 overlap closely enough on chemistry and mechanical properties that ASTM A959 S40977 is often considered as a substitute for ASTM A240/A240M S40977 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 S40977
0 active listings and RFQs →
ASTM A959 S40977
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A240/A240M S40977 and ASTM A959 S40977?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A240/A240M S40977 be substituted with ASTM A959 S40977?
ASTM A240/A240M S40977 and ASTM A959 S40977 overlap closely enough on chemistry and mechanical properties that ASTM A959 S40977 is often considered as a substitute for ASTM A240/A240M S40977 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.