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BS 970 EN5B vs BS 970 (Part 1) 055M15

Close Alternative — 79.7% match based on chemical composition and mechanical property overlap.

BS 970 EN5B (BS 970:1955) and BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 EN5B is typically used for mechanical properties are not part of the contractual obligations of specifications en 5a, en 5b and en 5c., while BS 970 (Part 1) 055M15 is commonly used for as-rolled, or as-rolled and softened, steel (section two). BS 970 EN5B is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 055M15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN5B vs BS 970 (Part 1) 055M15 is a 79.7% 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 79.7%.

Frequently Compared With BS 970 EN5B:
BS 970 (Part 1) 040A12 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 060A40 BS 970 (Part 1) 060A45
Match Breakdown
CHEMISTRY MATCH
79.7%
MECHANICAL MATCH
No shared data
OVERALL
79.7%
Specifications
Property BS 970 EN5B BS 970 (Part 1) 055M15
Standard BS 970:1955 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.28-0.33 <=0.20
Si (%) 0.05-0.35 Not specified
Mn (%) 0.70-0.90 <=0.80
S (%) <=0.060 Not specified
P (%) <=0.060 Not specified
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 EN5B BS 970 (Part 1) 055M15
Condition Not specified As-rolled
Tensile Strength Not specified 310 MPa min
Elongation Not specified 25 % min
Hardness Not specified 121 HB min
Typical Applications
BS 970 EN5B
Mechanical properties are not part of the contractual obligations of specifications En 5A, En 5B and En 5C.
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can BS 970 EN5B Be Substituted With BS 970 (Part 1) 055M15?
BS 970 EN5B and BS 970 (Part 1) 055M15 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 EN5B
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BS 970 (Part 1) 055M15
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Frequently Asked Questions
What is the difference between BS 970 EN5B and BS 970 (Part 1) 055M15?
BS 970 EN5B specifies Si, S, P which are not specified for BS 970 (Part 1) 055M15.
Can BS 970 EN5B be substituted with BS 970 (Part 1) 055M15?
BS 970 EN5B and BS 970 (Part 1) 055M15 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.