Strong Match — 96.9% match
based on chemical composition and mechanical property overlap.
EN 10084 C10E (EN 10084:2008) and BS 970 (Part 3) 045M10 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Carbon Steel category.
EN 10084 C10E is typically used for case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1), while BS 970 (Part 3) 045M10 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (table 14).
EN 10084 C10E is defined under European Standard (EN), originating from Europe, while BS 970 (Part 3) 045M10 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, EN 10084 C10E vs BS 970 (Part 3) 045M10 is a 96.9% 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 96.9%.
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 C10E
BS 970 (Part 3) 045M10
Condition
Soft annealed
Not specified
Hardness
Soft annealed: 131 HB max
Not specified
Typical Applications
EN 10084 C10E
Case hardened machine parts: carburized or carbonitrided, then hardened (clause 3.1)
BS 970 (Part 3) 045M10
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; case hardening steel, carbon and carbon manganese (Table 14)
Can EN 10084 C10E Be Substituted With BS 970 (Part 3) 045M10?
EN 10084 C10E and BS 970 (Part 3) 045M10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 045M10 is often considered as a substitute for EN 10084 C10E 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 C10E and BS 970 (Part 3) 045M10?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10084 C10E be substituted with BS 970 (Part 3) 045M10?
EN 10084 C10E and BS 970 (Part 3) 045M10 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 3) 045M10 is often considered as a substitute for EN 10084 C10E in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.