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BS 970 (Part 1) 080M15 vs BS 970 (Part 1) 040A04

Strong Match — 85.7% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 080M15 (BS 970 (Part 1):1991) and BS 970 (Part 1) 040A04 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. BS 970 (Part 1) 080M15 is typically used for case hardening steel (section four), while BS 970 (Part 1) 040A04 is commonly used for as-rolled, or as-rolled and softened, steel (section two). BS 970 (Part 1) 080M15 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 040A04 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 080M15 vs BS 970 (Part 1) 040A04 is a 85.7% 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 85.7%.

Frequently Compared With BS 970 (Part 1) 080M15:
BS 970 (Part 1) 080A15 BS 970 (Part 1) 080A15 BS 970 (Part 1) 060A40 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A32 BS 970 (Part 1) 040A12 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10
Match Breakdown
CHEMISTRY MATCH
85.7%
MECHANICAL MATCH
No shared data
OVERALL
85.7%
Specifications
Property BS 970 (Part 1) 080M15 BS 970 (Part 1) 040A04
Standard BS 970 (Part 1):1991 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.12-0.18 <=0.08
Mn (%) 0.60-1.00 0.30-0.50
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) 080M15 BS 970 (Part 1) 040A04
Condition Case hardened, 19 mm test bar Not specified
Tensile Strength 460 MPa min Not specified
Elongation 18 % min Not specified
Typical Applications
BS 970 (Part 1) 080M15
Case hardening steel (section four)
BS 970 (Part 1) 040A04
As-rolled, or as-rolled and softened, steel (section two)
Can BS 970 (Part 1) 080M15 Be Substituted With BS 970 (Part 1) 040A04?
BS 970 (Part 1) 080M15 and BS 970 (Part 1) 040A04 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A04 is often considered as a substitute for BS 970 (Part 1) 080M15 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) 080M15
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BS 970 (Part 1) 040A04
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 080M15 and BS 970 (Part 1) 040A04?
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) 080M15 be substituted with BS 970 (Part 1) 040A04?
BS 970 (Part 1) 080M15 and BS 970 (Part 1) 040A04 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A04 is often considered as a substitute for BS 970 (Part 1) 080M15 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.