Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN 10083-2 C55R (EN 10083-2:2006) and BS 970 (Part 1) 060A81 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Carbon Steel category.
EN 10083-2 C55R is typically used for quenched and tempered, flame or induction hardened machine parts; can also be used normalized (clause 1), while BS 970 (Part 1) 060A81 is commonly used for as-rolled, or as-rolled and softened, steel (section two).
EN 10083-2 C55R is defined under European Standard (EN), originating from Europe, while BS 970 (Part 1) 060A81 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, EN 10083-2 C55R vs BS 970 (Part 1) 060A81 is a 60% 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 C55R
BS 970 (Part 1) 060A81
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 C55R
Quenched and tempered, flame or induction hardened machine parts; can also be used normalized (clause 1)
BS 970 (Part 1) 060A81
As-rolled, or as-rolled and softened, steel (section two)
Key Differences
EN 10083-2 C55R specifies Cr, Cr+Mo+Ni, Mo, Ni which are not specified for BS 970 (Part 1) 060A81.
Can EN 10083-2 C55R Be Substituted With BS 970 (Part 1) 060A81?
EN 10083-2 C55R and BS 970 (Part 1) 060A81 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 C55R and BS 970 (Part 1) 060A81?
EN 10083-2 C55R specifies Cr, Cr+Mo+Ni, Mo, Ni which are not specified for BS 970 (Part 1) 060A81.
Can EN 10083-2 C55R be substituted with BS 970 (Part 1) 060A81?
EN 10083-2 C55R and BS 970 (Part 1) 060A81 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.