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BS 970 (Part 1) 055M15 vs BS 970 (Part 1) 045M10

Strong Match — 90.4% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 055M15 (BS 970 (Part 1):1991) and BS 970 (Part 1) 045M10 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 1) 055M15 is typically used for as-rolled, or as-rolled and softened, steel (section two), while BS 970 (Part 1) 045M10 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties).. BS 970 (Part 1) 055M15 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 045M10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 055M15 vs BS 970 (Part 1) 045M10 is a 90.4% 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 90.4%.

Frequently Compared With BS 970 (Part 1) 055M15:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 060A40 BS 970 (Part 1) 040A12 BS 970 (Part 1) 045A10 BS 970 (Part 1) 060A81 BS 970 (Part 1) 060A78 BS 970 (Part 1) 070A67 BS 970 (Part 3) 080A15 BS 970 (Part 1) 040A04 BS 970 (Part 3) 070M20 BS 970 (Part 1) 080A15 BS 970 (Part 1) 045A10
Match Breakdown
CHEMISTRY MATCH
90.4%
MECHANICAL MATCH
No shared data
OVERALL
90.4%
Specifications
Property BS 970 (Part 1) 055M15 BS 970 (Part 1) 045M10
Standard BS 970 (Part 1):1991 BS 970 (Part 1):1983
Category Carbon Steel Carbon Steel
C (%) <=0.20 0.07-0.13
Mn (%) <=0.80 0.30-0.60
P (%) Not specified <=0.050
S (%) Not specified <=0.050
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) 055M15 BS 970 (Part 1) 045M10
Condition As-rolled Not specified
Tensile Strength 310 MPa min Not specified
Elongation 25 % min Not specified
Hardness 121 HB min Not specified
Typical Applications
BS 970 (Part 1) 055M15
As-rolled, or as-rolled and softened, steel (section two)
BS 970 (Part 1) 045M10
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Key Differences
Can BS 970 (Part 1) 055M15 Be Substituted With BS 970 (Part 1) 045M10?
BS 970 (Part 1) 055M15 and BS 970 (Part 1) 045M10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 045M10 is often considered as a substitute for BS 970 (Part 1) 055M15 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) 055M15
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BS 970 (Part 1) 045M10
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 055M15 and BS 970 (Part 1) 045M10?
BS 970 (Part 1) 045M10 specifies P, S which are not specified for BS 970 (Part 1) 055M15.
Can BS 970 (Part 1) 055M15 be substituted with BS 970 (Part 1) 045M10?
BS 970 (Part 1) 055M15 and BS 970 (Part 1) 045M10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 045M10 is often considered as a substitute for BS 970 (Part 1) 055M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.