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ASTM A240/A240M S33550 vs ASTM A959 310HCb

Close Alternative — 74.1% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S33550 (ASTM A240/A240M:2025) and ASTM A959 310HCb (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S33550 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 310HCb is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S33550 is defined under ASTM International, originating from United States, while ASTM A959 310HCb is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S33550 vs ASTM A959 310HCb is a 74.1% 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 74.1%.

Frequently Compared With ASTM A240/A240M S33550:
GOST 5632 06Kh23N28 EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H 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) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
74.1%
MECHANICAL MATCH
No shared data
OVERALL
74.1%
Specifications
Property ASTM A240/A240M S33550 ASTM A959 310HCb
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) 0.04-0.10 0.04-0.10
Mn (%) <=1.50 <=2.00
P (%) <=0.040 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.00
Cr (%) 25.0-28.0 24.0-26.0
Ni (%) 16.5-20.0 19.0-22.0
N (%) 0.18-0.25 Not specified
Nb (%) 0.05-0.15 Not specified
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 S33550 ASTM A959 310HCb
Tensile Strength >=600 MPa Not specified
Yield Strength >=280 MPa Not specified
Elongation >=35% Not specified
Hardness <=217 HB Not specified
Condition Plate, sheet and strip; yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S33550
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 310HCb
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A240/A240M S33550 Be Substituted With ASTM A959 310HCb?
ASTM A240/A240M S33550 and ASTM A959 310HCb 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 A240/A240M S33550
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ASTM A959 310HCb
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S33550 and ASTM A959 310HCb?
ASTM A240/A240M S33550 specifies N, Nb which are not specified for ASTM A959 310HCb.
Can ASTM A240/A240M S33550 be substituted with ASTM A959 310HCb?
ASTM A240/A240M S33550 and ASTM A959 310HCb 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.