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BS 970 EN58H vs BS 970 (Part 1) 320S31

Close Alternative — 74.9% match based on chemical composition and mechanical property overlap.

BS 970 EN58H (BS 970:1955) and BS 970 (Part 1) 320S31 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Stainless Steel category. BS 970 EN58H 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 EN58H vs BS 970 (Part 1) 320S31 is a 74.9% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 74.9%.

Frequently Compared With BS 970 EN58H:
EN 10088-1 1.4301 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoVH EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12Ni2Mo ASTM A959 .- GOST 5632 06Kh23N28 GOST 5632 08X18H10 EN 10088-1 1.4006 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12MoH GB/T 3280 06Cr19Ni10
Match Breakdown
CHEMISTRY MATCH
74.9%
MECHANICAL MATCH
No shared data
OVERALL
74.9%
Specifications
Property BS 970 EN58H BS 970 (Part 1) 320S31
Standard BS 970:1955 BS 970 (Part 1):1983
Category Stainless Steel Stainless Steel
C (%) <=0.12 <=0.08
Si (%) >=0.20 <=1.0
Mn (%) <=2.00 <=2.0
Ni (%) 8.0-12.0 11.0-14.0
Cr (%) 17.0-20.0 16.5-18.5
Mo (%) 1.50-2.50 2.00-2.50
S (%) <=0.045 <=0.030
P (%) <=0.045 <=0.045
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.
Mechanical Properties
Property BS 970 EN58H BS 970 (Part 1) 320S31
Tensile Strength ≥541 MPa (35 tons/sq in, converted) Not specified
Yield Strength ≥185 MPa (12 tons/sq in, converted) Not specified
Elongation ≥30% Not specified
Condition , ruling section 6 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN58H
Not documented
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 EN58H Be Substituted With BS 970 (Part 1) 320S31?
BS 970 EN58H and BS 970 (Part 1) 320S31 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
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BS 970 EN58H
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BS 970 (Part 1) 320S31
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Frequently Asked Questions
What is the difference between BS 970 EN58H and BS 970 (Part 1) 320S31?
BS 970 (Part 1) 320S31 specifies Ti which is not specified for BS 970 EN58H.
Can BS 970 EN58H be substituted with BS 970 (Part 1) 320S31?
BS 970 EN58H and BS 970 (Part 1) 320S31 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.