Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN 10083-2 C55E (EN 10083-2:2006) and BS 970 (Part 3) 045M10 (BS 970 (Part 3):1991) are both steel grades.
Both fall under the Carbon Steel category.
EN 10083-2 C55E is typically used for quenched and tempered, flame or induction hardened machine parts; can also be used normalized (clause 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 10083-2 C55E 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 10083-2 C55E vs BS 970 (Part 3) 045M10 is a 63% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10083-2 C55E
BS 970 (Part 3) 045M10
Condition
Quenched and tempered (+QT), ruling section d <= 16 mm
Not specified
Elongation
12% min
Not specified
Hardness
Soft annealed (+A): 229 HBW max
Not specified
Tensile Strength
800 to 950 MPa
Not specified
Yield Strength
550 MPa min
Not specified
Typical Applications
EN 10083-2 C55E
Quenched and tempered, flame or induction hardened machine parts; can also be used normalized (clause 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)
Key Differences
EN 10083-2 C55E specifies Cr, Cr+Mo+Ni, Mo, Ni which are not specified for BS 970 (Part 3) 045M10.
Can EN 10083-2 C55E Be Substituted With BS 970 (Part 3) 045M10?
EN 10083-2 C55E and BS 970 (Part 3) 045M10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
What is the difference between EN 10083-2 C55E and BS 970 (Part 3) 045M10?
EN 10083-2 C55E specifies Cr, Cr+Mo+Ni, Mo, Ni which are not specified for BS 970 (Part 3) 045M10.
Can EN 10083-2 C55E be substituted with BS 970 (Part 3) 045M10?
EN 10083-2 C55E and BS 970 (Part 3) 045M10 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.