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BS 970 (Part 1) 045M10 vs BS 970 (Part 1) 045A10

Strong Match — 99% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 045M10 (BS 970 (Part 1):1991) and BS 970 (Part 1) 045A10 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 1) 045M10 is typically used for case hardening steel (section four), while BS 970 (Part 1) 045A10 is commonly used for case hardening steel (section four). BS 970 (Part 1) 045M10 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 045A10 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 045M10 vs BS 970 (Part 1) 045A10 is a 98.6% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 99%.

Frequently Compared With BS 970 (Part 1) 045M10:
BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A81 BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A67 BS 970 (Part 1) 060A78 BS 970 (Part 1) 070A67 BS 970 (Part 3) 070M20 BS 970 (Part 1) 070M55 BS 970 (Part 1) 070M20 BS 970 (Part 1) 070M26
Match Breakdown
CHEMISTRY MATCH
98.6%
MECHANICAL MATCH
100%
OVERALL
99%
Specifications
Property BS 970 (Part 1) 045M10 BS 970 (Part 1) 045A10
Standard BS 970 (Part 1):1991 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.07-0.13 0.08-0.13
Mn (%) 0.30-0.60 0.30-0.60
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) 045M10 BS 970 (Part 1) 045A10
Condition Case hardened, 19 mm test bar Case hardened, 19 mm test bar
Tensile Strength 430 MPa min 430 MPa min
Elongation 18 % min 18 % min
Typical Applications
BS 970 (Part 1) 045M10
Case hardening steel (section four)
BS 970 (Part 1) 045A10
Case hardening steel (section four)
Can BS 970 (Part 1) 045M10 Be Substituted With BS 970 (Part 1) 045A10?
BS 970 (Part 1) 045M10 and BS 970 (Part 1) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 045A10 is often considered as a substitute for BS 970 (Part 1) 045M10 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) 045M10
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BS 970 (Part 1) 045A10
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 045M10 and BS 970 (Part 1) 045A10?
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) 045M10 be substituted with BS 970 (Part 1) 045A10?
BS 970 (Part 1) 045M10 and BS 970 (Part 1) 045A10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 045A10 is often considered as a substitute for BS 970 (Part 1) 045M10 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.