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ASTM A959 S45503 vs ASTM A240/A240M S44700

Related Material — 58.1% match based on chemical composition and mechanical property overlap.

ASTM A959 S45503 (ASTM A959:2011) and ASTM A240/A240M S44700 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S45503 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while ASTM A240/A240M S44700 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A959 S45503 is defined under ASTM International, originating from United States, while ASTM A240/A240M S44700 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A959 S45503 vs ASTM A240/A240M S44700 is a 58.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 58.1%.

Frequently Compared With ASTM A959 S45503:
IS 1570 (Part 7) 12Cr12MoH EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH ASTM A959 29-4-2 ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 GOST 5632 08X18H10
Match Breakdown
CHEMISTRY MATCH
58.1%
MECHANICAL MATCH
No shared data
OVERALL
58.1%
Specifications
Property ASTM A959 S45503 ASTM A240/A240M S44700
Standard ASTM A959:2011 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) <=0.010 <=0.010
Cb (%) 0.10-0.50 Not specified
Cr (%) 11.0-12.5 28.0-30.0
Cu (%) 1.50-2.50 <=0.15
Mn (%) <=0.50 <=0.30
Mo (%) <=0.50 3.5-4.2
Ni (%) 7.5-9.5 <=0.15
P (%) <=0.010 <=0.025
S (%) <=0.010 <=0.020
Si (%) <=0.20 <=0.20
Ti (%) 1.00-1.35 Not specified
N (%) Not specified <=0.020
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 S45503 ASTM A240/A240M S44700
Tensile Strength Not specified >=550 MPa
Yield Strength Not specified >=415 MPa
Elongation Not specified >=20%
Hardness Not specified <=223 HB
Condition Not specified Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A959 S45503
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
ASTM A240/A240M S44700
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A959 S45503 Be Substituted With ASTM A240/A240M S44700?
ASTM A959 S45503 and ASTM A240/A240M S44700 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
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Frequently Asked Questions
What is the difference between ASTM A959 S45503 and ASTM A240/A240M S44700?
ASTM A959 S45503 specifies Cb, Ti which are not specified for ASTM A240/A240M S44700. ASTM A240/A240M S44700 specifies N which is not specified for ASTM A959 S45503.
Can ASTM A959 S45503 be substituted with ASTM A240/A240M S44700?
ASTM A959 S45503 and ASTM A240/A240M S44700 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.