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EN 10084 C15E vs BS 970 (Part 1) 040A12

Strong Match — 86% match based on chemical composition and mechanical property overlap.

EN 10084 C15E (EN 10084:2008) and BS 970 (Part 1) 040A12 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Carbon Steel category. EN 10084 C15E is typically used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1), while BS 970 (Part 1) 040A12 is commonly used for as-rolled, or as-rolled and softened, steel (section two). EN 10084 C15E is defined under European Standard (EN), originating from Europe, while BS 970 (Part 1) 040A12 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, EN 10084 C15E vs BS 970 (Part 1) 040A12 is a 86% 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 86%.

Frequently Compared With EN 10084 C15E:
BS 970 (Part 3) 045M10 BS 970 (Part 1) 060A67 BS 970 (Part 1) 060A72 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 3) 045A10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A62 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045M10
Match Breakdown
CHEMISTRY MATCH
86%
MECHANICAL MATCH
No shared data
OVERALL
86%
Specifications
Property EN 10084 C15E BS 970 (Part 1) 040A12
Standard EN 10084:2008 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.12-0.18 0.10-0.15
Mn (%) 0.30-0.60 0.30-0.50
P (%) <=0.035 Not specified
S (%) <=0.035 Not specified
Si (%) <=0.40 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 EN 10084 C15E BS 970 (Part 1) 040A12
Condition Soft annealed Not specified
Hardness Soft annealed: 143 HB max Not specified
Typical Applications
EN 10084 C15E
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
BS 970 (Part 1) 040A12
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
Can EN 10084 C15E Be Substituted With BS 970 (Part 1) 040A12?
EN 10084 C15E and BS 970 (Part 1) 040A12 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A12 is often considered as a substitute for EN 10084 C15E 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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EN 10084 C15E
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BS 970 (Part 1) 040A12
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Frequently Asked Questions
What is the difference between EN 10084 C15E and BS 970 (Part 1) 040A12?
EN 10084 C15E specifies P, S, Si which are not specified for BS 970 (Part 1) 040A12.
Can EN 10084 C15E be substituted with BS 970 (Part 1) 040A12?
EN 10084 C15E and BS 970 (Part 1) 040A12 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 040A12 is often considered as a substitute for EN 10084 C15E in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.