Strong Match — 92.4% match
based on chemical composition and mechanical property overlap.
EN 10084 C10R (EN 10084:2008) and BS 970 (Part 1) 045M10 (BS 970 (Part 1):1983) 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) 045M10 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)..
EN 10084 C10R is defined under European Standard (EN), originating from Europe, while BS 970 (Part 1) 045M10 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, EN 10084 C10R vs BS 970 (Part 1) 045M10 is a 92.4% 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 92.4%.
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) 045M10
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) 045M10
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Key Differences
EN 10084 C10R specifies Si which is not specified for BS 970 (Part 1) 045M10.
Can EN 10084 C10R Be Substituted With BS 970 (Part 1) 045M10?
EN 10084 C10R 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 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.
What is the difference between EN 10084 C10R and BS 970 (Part 1) 045M10?
EN 10084 C10R specifies Si which is not specified for BS 970 (Part 1) 045M10.
Can EN 10084 C10R be substituted with BS 970 (Part 1) 045M10?
EN 10084 C10R 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 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.