Post Stock Login Register

ASTM A959 S20400 vs ASTM A240/A240M S20103

Close Alternative — 76.3% match based on chemical composition and mechanical property overlap.

ASTM A959 S20400 (ASTM A959:2011) and ASTM A240/A240M S20103 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S20400 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S20103 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S20400 is defined under ASTM International, originating from United States, while ASTM A240/A240M S20103 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S20400 vs ASTM A240/A240M S20103 is a 76.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 76.3%.

Frequently Compared With ASTM A959 S20400:
ASTM A959 201L ASTM A959 201LN EN 10088-1 1.4401 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH ASTM A959 .- EN 10088-1 1.4301 GB/T 3280 06Cr19Ni10 EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
76.3%
MECHANICAL MATCH
No shared data
OVERALL
76.3%
Specifications
Property ASTM A959 S20400 ASTM A240/A240M S20103
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.030 <=0.03
Cr (%) 15.0-17.0 16.0-18.0
Mn (%) 7.0-9.0 5.50-7.50
N (%) 0.15-0.30 <=0.25
Ni (%) 1.50-3.00 3.5-5.5
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 S20400 ASTM A240/A240M S20103
Tensile Strength Not specified >=655 MPa
Yield Strength Not specified >=260 MPa
Elongation Not specified >=40%
Hardness Not specified <=217 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 S20400
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S20103
Pressure vessels and general applications (plate, sheet and strip)
Can ASTM A959 S20400 Be Substituted With ASTM A240/A240M S20103?
ASTM A959 S20400 and ASTM A240/A240M S20103 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.
On M-EX Right Now
ASTM A959 S20400
0 active listings and RFQs →
ASTM A240/A240M S20103
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A959 S20400 and ASTM A240/A240M S20103?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A959 S20400 be substituted with ASTM A240/A240M S20103?
ASTM A959 S20400 and ASTM A240/A240M S20103 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.