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BS 970 (Part 1) 320S31 vs EN 10088-1 X6CrNiMoNb17-12-2

Strong Match — 96.2% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 320S31 (BS 970 (Part 1):1991) and EN 10088-1 X6CrNiMoNb17-12-2 (EN 10088-1:2023) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 320S31 is defined under British Standards (BS), originating from United Kingdom, while EN 10088-1 X6CrNiMoNb17-12-2 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 (Part 1) 320S31 vs EN 10088-1 X6CrNiMoNb17-12-2 is a 96.2% 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 96.2%.

Frequently Compared With BS 970 (Part 1) 320S31:
GOST 5632 06Kh23N28 EN 10088-1 1.4301 EN 10088-1 1.4401 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH ASTM A959 .- GB/T 3280 06Cr19Ni10 GOST 5632 08X18H10 EN 10088-1 1.4006 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr12Ni2Mo
Match Breakdown
CHEMISTRY MATCH
96.2%
MECHANICAL MATCH
No shared data
OVERALL
96.2%
Specifications
Property BS 970 (Part 1) 320S31 EN 10088-1 X6CrNiMoNb17-12-2
Standard BS 970 (Part 1):1991 EN 10088-1:2023
Category Stainless Steel Stainless Steel
C (%) <=0.08 <=0.08
Si (%) <=1.0 <=1.00
Mn (%) <=2.0 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.015
Cr (%) 16.5-18.5 16.5-18.5
Mo (%) 2.00-2.50 2.00-2.50
Ni (%) 11.0-14.0 10.5-13.5
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 1) 320S31 EN 10088-1 X6CrNiMoNb17-12-2
Condition Softened, 1000-1100 deg C Not specified
Tensile Strength 510 MPa min Not specified
Yield Strength 210 MPa min (0.2% proof) Not specified
Elongation 35 % min Not specified
Hardness 183 HB max Not specified
Typical Applications
BS 970 (Part 1) 320S31
Austenitic stainless and heat resisting steel (section five)
EN 10088-1 X6CrNiMoNb17-12-2
Not documented
Can BS 970 (Part 1) 320S31 Be Substituted With EN 10088-1 X6CrNiMoNb17-12-2?
BS 970 (Part 1) 320S31 and EN 10088-1 X6CrNiMoNb17-12-2 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X6CrNiMoNb17-12-2 is often considered as a substitute for BS 970 (Part 1) 320S31 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) 320S31
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EN 10088-1 X6CrNiMoNb17-12-2
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 320S31 and EN 10088-1 X6CrNiMoNb17-12-2?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 1) 320S31 be substituted with EN 10088-1 X6CrNiMoNb17-12-2?
BS 970 (Part 1) 320S31 and EN 10088-1 X6CrNiMoNb17-12-2 overlap closely enough on chemistry and mechanical properties that EN 10088-1 X6CrNiMoNb17-12-2 is often considered as a substitute for BS 970 (Part 1) 320S31 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.