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ASTM A959 S32615 vs BS 970 (Part 1) 320S31

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

ASTM A959 S32615 (ASTM A959:2011) and BS 970 (Part 1) 320S31 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 S32615 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while BS 970 (Part 1) 320S31 is commonly used for austenitic stainless and heat resisting steel (section five). ASTM A959 S32615 is defined under ASTM International, originating from United States, while BS 970 (Part 1) 320S31 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A959 S32615 vs BS 970 (Part 1) 320S31 is a 71.2% 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 69.9%.

Frequently Compared With ASTM A959 S32615:
GOST 5632 06Kh23N28 GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H ASTM A959 .- GB/T 3280 06Cr19Ni10 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 IS 1570 (Part 7) 12Cr12MoVH
Match Breakdown
CHEMISTRY MATCH
71.2%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property ASTM A959 S32615 BS 970 (Part 1) 320S31
Standard ASTM A959:2011 BS 970 (Part 1):1991
Category Stainless Steel Stainless Steel
C (%) <=0.07 <=0.08
Cr (%) 16.5-19.5 16.5-18.5
Cu (%) 1.50-2.50 Not specified
Mn (%) <=2.00 <=2.0
Mo (%) 0.30-1.50 2.00-2.50
Ni (%) 19.0-22.0 11.0-14.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) 4.8-6.0 <=1.0
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 S32615 BS 970 (Part 1) 320S31
Condition Not specified Softened, 1000-1100 deg C
Tensile Strength Not specified 510 MPa min
Yield Strength Not specified 210 MPa min (0.2% proof)
Elongation Not specified 35 % min
Hardness Not specified 183 HB max
Typical Applications
ASTM A959 S32615
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
BS 970 (Part 1) 320S31
Austenitic stainless and heat resisting steel (section five)
Key Differences
Can ASTM A959 S32615 Be Substituted With BS 970 (Part 1) 320S31?
ASTM A959 S32615 and BS 970 (Part 1) 320S31 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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ASTM A959 S32615
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Frequently Asked Questions
What is the difference between ASTM A959 S32615 and BS 970 (Part 1) 320S31?
ASTM A959 S32615 specifies Cu which is not specified for BS 970 (Part 1) 320S31.
Can ASTM A959 S32615 be substituted with BS 970 (Part 1) 320S31?
ASTM A959 S32615 and BS 970 (Part 1) 320S31 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.