Post Stock Login Register

ASTM A959 302 vs BS 970 (Part 1) 302S31

Strong Match — 95.6% match based on chemical composition and mechanical property overlap.

ASTM A959 302 (ASTM A959:2011) and BS 970 (Part 1) 302S31 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Stainless Steel category. ASTM A959 302 is typically used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1), while BS 970 (Part 1) 302S31 is commonly used for austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (table 14, with table 15 for the cold drawn condition).. ASTM A959 302 is defined under ASTM International, originating from United States, while BS 970 (Part 1) 302S31 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, ASTM A959 302 vs BS 970 (Part 1) 302S31 is a 95.6% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 95.6%.

Frequently Compared With ASTM A959 302:
EN 10088-1 1.4301 EN 10088-1 1.4845 ASTM A959 202 GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 IS 1570 (Part 7) 12Cr12MoH ASTM A959 .- EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12Ni2Mo GB/T 3280 06Cr19Ni10 IS 1570 (Part 7) 11Cr17Ni13W3TiH
Match Breakdown
CHEMISTRY MATCH
95.6%
MECHANICAL MATCH
No shared data
OVERALL
95.6%
Specifications
Property ASTM A959 302 BS 970 (Part 1) 302S31
Standard ASTM A959:2011 BS 970 (Part 1):1983
Category Stainless Steel Stainless Steel
C (%) <=0.15 <=0.12
Cr (%) 17.0-19.0 17.0-19.0
Mn (%) <=2.00 <=2.0
N (%) <=0.10 Not specified
Ni (%) 8.0-10.0 8.0-10.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=1.00 <=1.0
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
ASTM A959 302
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
BS 970 (Part 1) 302S31
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
Key Differences
Can ASTM A959 302 Be Substituted With BS 970 (Part 1) 302S31?
ASTM A959 302 and BS 970 (Part 1) 302S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 302S31 is often considered as a substitute for ASTM A959 302 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
On M-EX Right Now
ASTM A959 302
0 active listings and RFQs →
BS 970 (Part 1) 302S31
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A959 302 and BS 970 (Part 1) 302S31?
ASTM A959 302 specifies N which is not specified for BS 970 (Part 1) 302S31.
Can ASTM A959 302 be substituted with BS 970 (Part 1) 302S31?
ASTM A959 302 and BS 970 (Part 1) 302S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 302S31 is often considered as a substitute for ASTM A959 302 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.