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EN 10084 C10R vs BS 970 (Part 1) 040A12

Strong Match — 85.2% match based on chemical composition and mechanical property overlap.

EN 10084 C10R (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 C10R 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 C10R 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 C10R vs BS 970 (Part 1) 040A12 is a 85.2% 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 85.2%.

Frequently Compared With EN 10084 C10R:
BS 970 (Part 3) 045A10 BS 970 (Part 3) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 045M10 BS 970 (Part 1) 060A67 BS 970 (Part 1) 040A04 BS 970 (Part 1) 040A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 045A10 BS 970 (Part 1) 055M15 BS 970 (Part 1) 060A62 BS 970 (Part 1) 060A78
Match Breakdown
CHEMISTRY MATCH
85.2%
MECHANICAL MATCH
No shared data
OVERALL
85.2%
Specifications
Property EN 10084 C10R BS 970 (Part 1) 040A12
Standard EN 10084:2008 BS 970 (Part 1):1991
Category Carbon Steel Carbon Steel
C (%) 0.07-0.13 0.10-0.15
Mn (%) 0.30-0.60 0.30-0.50
P (%) <=0.035 Not specified
S (%) 0.020-0.040 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 C10R BS 970 (Part 1) 040A12
Condition Soft annealed Not specified
Hardness Soft annealed: 131 HB max Not specified
Typical Applications
EN 10084 C10R
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 C10R Be Substituted With BS 970 (Part 1) 040A12?
EN 10084 C10R 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 C10R 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 C10R
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BS 970 (Part 1) 040A12
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Frequently Asked Questions
What is the difference between EN 10084 C10R and BS 970 (Part 1) 040A12?
EN 10084 C10R specifies P, S, Si which are not specified for BS 970 (Part 1) 040A12.
Can EN 10084 C10R be substituted with BS 970 (Part 1) 040A12?
EN 10084 C10R 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 C10R in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.