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BS 970 (Part 1) 303S31 vs EN 10088-1 1.4401

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 303S31 (BS 970 (Part 1):1991) and EN 10088-1 1.4401 (EN 10088-1:2014) are both steel grades. Both fall under the Stainless Steel category. BS 970 (Part 1) 303S31 is typically used for austenitic stainless and heat resisting steel (section five), while EN 10088-1 1.4401 is commonly used for marine, chemical processing, pharmaceutical equipment. BS 970 (Part 1) 303S31 is defined under British Standards (BS), originating from United Kingdom, while EN 10088-1 1.4401 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 (Part 1) 303S31 vs EN 10088-1 1.4401 is a 61.2% match. As per mechanical properties, the match is 25%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With BS 970 (Part 1) 303S31:
EN 10088-1 1.4301 ASTM A959 16-8-2H GB/T 3280 06Cr19Ni10 ASTM A959 .- EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH GOST 5632 06Kh23N28 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
61.2%
MECHANICAL MATCH
25%
OVERALL
35%
Specifications
Property BS 970 (Part 1) 303S31 EN 10088-1 1.4401
Standard BS 970 (Part 1):1991 EN 10088-1:2014
Category Stainless Steel Stainless Steel
C (%) <=0.12 ≤0.07
Si (%) <=1.0 ≤1.00
Mn (%) <=2.0 ≤2.00
P (%) <=0.060 Not specified
S (%) 0.15-0.35 Not specified
Cr (%) 17.0-19.0 16.5–18.5
Mo (%) <=1.00 2.0–2.5
Ni (%) 8.0-10.0 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) 303S31 EN 10088-1 1.4401
Condition Softened, 1000-1100 deg C Not specified
Tensile Strength 510 MPa min ≥520 MPa
Yield Strength 190 MPa min (0.2% proof) ≥210 MPa
Elongation 40 % min ≥40%
Hardness 183 HB max ≤215 HB
Typical Applications
BS 970 (Part 1) 303S31
Austenitic stainless and heat resisting steel (section five)
EN 10088-1 1.4401
Marine, chemical processing, pharmaceutical equipment
Key Differences
Can BS 970 (Part 1) 303S31 Be Substituted With EN 10088-1 1.4401?
BS 970 (Part 1) 303S31 and EN 10088-1 1.4401 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.
Forms & Sizes Available on M-EX
BS 970 (Part 1) 303S31
No active listings currently.
EN 10088-1 1.4401
Sheet → (4 listings)
Thickness: 6–6 mm (0.24–0.24 in)
Width: 1250–1250 mm (49.21–49.21 in)
Length: 2500–3400 mm (98.43–133.86 in)
On M-EX Right Now
BS 970 (Part 1) 303S31
0 active listings and RFQs →
EN 10088-1 1.4401
4 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 1) 303S31 and EN 10088-1 1.4401?
BS 970 (Part 1) 303S31 specifies P, S which are not specified for EN 10088-1 1.4401.
Can BS 970 (Part 1) 303S31 be substituted with EN 10088-1 1.4401?
BS 970 (Part 1) 303S31 and EN 10088-1 1.4401 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.