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ASTM A276/A276M S32550 vs ASTM A959 S31803

Close Alternative — 76.7% match based on chemical composition and mechanical property overlap.

ASTM A276/A276M S32550 (ASTM A276/A276M:2017) and ASTM A959 S31803 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A276/A276M S32550 is typically used for stainless steel bars and shapes (hot-finished or cold-finished), while ASTM A959 S31803 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A276/A276M S32550 is defined under ASTM International, originating from United States, while ASTM A959 S31803 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A276/A276M S32550 vs ASTM A959 S31803 is a 76.7% 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 76.7%.

Frequently Compared With ASTM A276/A276M S32550:
ASTM A959 255 GOST 5632 08X18H10 ASTM A959 2205 ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 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) 12Cr12MoH
Match Breakdown
CHEMISTRY MATCH
76.7%
MECHANICAL MATCH
No shared data
OVERALL
76.7%
Specifications
Property ASTM A276/A276M S32550 ASTM A959 S31803
Standard ASTM A276/A276M:2017 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.04 <=0.030
Mn (%) <=1.50 <=2.00
P (%) <=0.040 <=0.030
S (%) <=0.030 <=0.020
Si (%) <=1.0 <=1.00
Cr (%) 24.0-27.0 21.0-23.0
Ni (%) 4.5-6.5 4.5-6.5
Mo (%) 2.9-3.9 2.5-3.5
N (%) 0.10-0.25 0.08-0.20
Cu (%) 1.50-2.50 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 A276/A276M S32550 ASTM A959 S31803
Tensile Strength >=750 MPa Not specified
Yield Strength >=550 MPa Not specified
Elongation >=25% Not specified
Hardness <=290 HB Not specified
Condition Condition A (Annealed), hot-finished or cold-finished, all sizes (first row printed) Not specified
Typical Applications
ASTM A276/A276M S32550
Stainless steel bars and shapes (hot-finished or cold-finished)
ASTM A959 S31803
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A276/A276M S32550 Be Substituted With ASTM A959 S31803?
ASTM A276/A276M S32550 and ASTM A959 S31803 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 A276/A276M S32550
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ASTM A959 S31803
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Frequently Asked Questions
What is the difference between ASTM A276/A276M S32550 and ASTM A959 S31803?
ASTM A276/A276M S32550 specifies Cu which is not specified for ASTM A959 S31803.
Can ASTM A276/A276M S32550 be substituted with ASTM A959 S31803?
ASTM A276/A276M S32550 and ASTM A959 S31803 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.