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BS 970 (Part 1) 303S31 vs EN 10088-1 X6CrNiCuS18-9-2

Strong Match — 87.6% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 303S31 (BS 970 (Part 1):1983) and EN 10088-1 X6CrNiCuS18-9-2 (EN 10088-1:2023) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 303S31 is defined under British Standards (BS), originating from United Kingdom, while EN 10088-1 X6CrNiCuS18-9-2 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 (Part 1) 303S31 vs EN 10088-1 X6CrNiCuS18-9-2 is a 87.6% 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 87.6%.

Frequently Compared With BS 970 (Part 1) 303S31:
EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoVH ASTM A959 16-8-2H GB/T 3280 06Cr19Ni10 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr13H ASTM A959 .- GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 EN 10088-1 1.4301
Match Breakdown
CHEMISTRY MATCH
87.6%
MECHANICAL MATCH
No shared data
OVERALL
87.6%
Specifications
Property BS 970 (Part 1) 303S31 EN 10088-1 X6CrNiCuS18-9-2
Standard BS 970 (Part 1):1983 EN 10088-1:2023
Category Stainless Steel Stainless Steel
C (%) <=0.12 <=0.08
Si (%) <=1.0 <=1.00
Mn (%) <=2.0 <=2.00
P (%) <=0.060 <=0.045
S (%) 0.15-0.35 0.15-0.35
Cr (%) 17.0-19.0 17.0-19.0
Mo (%) <=1.00 <=0.60
Ni (%) 8.0-10.0 8.0-10.0
N (%) Not specified <=0.10
Cu (%) Not specified 1.40-1.80
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) 303S31
Austenitic stainless and heat resisting steel for mechanical and allied engineering purposes (Table 14, with Table 15 for the cold drawn condition).
EN 10088-1 X6CrNiCuS18-9-2
Not documented
Key Differences
Can BS 970 (Part 1) 303S31 Be Substituted With EN 10088-1 X6CrNiCuS18-9-2?
BS 970 (Part 1) 303S31 and EN 10088-1 X6CrNiCuS18-9-2 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X6CrNiCuS18-9-2 is often considered as a substitute for BS 970 (Part 1) 303S31 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
BS 970 (Part 1) 303S31
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EN 10088-1 X6CrNiCuS18-9-2
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 303S31 and EN 10088-1 X6CrNiCuS18-9-2?
EN 10088-1 X6CrNiCuS18-9-2 specifies N, Cu which are not specified for BS 970 (Part 1) 303S31.
Can BS 970 (Part 1) 303S31 be substituted with EN 10088-1 X6CrNiCuS18-9-2?
BS 970 (Part 1) 303S31 and EN 10088-1 X6CrNiCuS18-9-2 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X6CrNiCuS18-9-2 is often considered as a substitute for BS 970 (Part 1) 303S31 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.