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BS 970 (Part 1) 316S33 vs BS 970 (Part 1) 320S31

Strong Match — 90.6% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 316S33 (BS 970 (Part 1):1983) and BS 970 (Part 1) 320S31 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 316S33 is typically used for austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (table 14, with table 15 for the cold drawn condition)., while BS 970 (Part 1) 320S31 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).. BS 970 (Part 1) 316S33 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 320S31 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 316S33 vs BS 970 (Part 1) 320S31 is a 90.6% 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 90.6%.

Frequently Compared With BS 970 (Part 1) 316S33:
GOST 5632 08X18H10 IS 1570 (Part 7) 12Cr12MoVH EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr13H ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4845 IS 1570 (Part 7) 11Cr17Ni13W3TiH
Match Breakdown
CHEMISTRY MATCH
90.6%
MECHANICAL MATCH
No shared data
OVERALL
90.6%
Specifications
Property BS 970 (Part 1) 316S33 BS 970 (Part 1) 320S31
Standard BS 970 (Part 1):1983 BS 970 (Part 1):1983
Category Stainless Steel Stainless Steel
C (%) <=0.07 <=0.08
Si (%) <=1.0 <=1.0
Mn (%) <=2.0 <=2.0
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Cr (%) 16.5-18.5 16.5-18.5
Mo (%) 2.50-3.00 2.00-2.50
Ni (%) 11.0-14.0 11.0-14.0
Ti (%) Not specified 5C-0.80
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 (Part 1) 316S33
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
BS 970 (Part 1) 320S31
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 BS 970 (Part 1) 316S33 Be Substituted With BS 970 (Part 1) 320S31?
BS 970 (Part 1) 316S33 and BS 970 (Part 1) 320S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 320S31 is often considered as a substitute for BS 970 (Part 1) 316S33 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 (Part 1) 316S33
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BS 970 (Part 1) 320S31
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 316S33 and BS 970 (Part 1) 320S31?
BS 970 (Part 1) 320S31 specifies Ti which is not specified for BS 970 (Part 1) 316S33.
Can BS 970 (Part 1) 316S33 be substituted with BS 970 (Part 1) 320S31?
BS 970 (Part 1) 316S33 and BS 970 (Part 1) 320S31 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 320S31 is often considered as a substitute for BS 970 (Part 1) 316S33 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.