Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
EN 10083-1 C45E (EN 10083-1:1996) and BS 970 (Part 1) 040A10 (BS 970 (Part 1):1991) are both steel grades.
Both fall under the Carbon Steel category.
EN 10083-1 C45E is typically used for quenched and tempered machine parts; also used normalized (clause 1.1, table 10), while BS 970 (Part 1) 040A10 is commonly used for used for bolts, studs, shafts, brackets, fabricated components, and general engineering parts..
EN 10083-1 C45E is defined under European Standard (EN), originating from Europe, while BS 970 (Part 1) 040A10 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, EN 10083-1 C45E vs BS 970 (Part 1) 040A10 is a 59.7% 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 10083-1 C45E
BS 970 (Part 1) 040A10
Condition
Quenched and tempered, ruling section d <= 16 mm
Not specified
Elongation
14% min
Not specified
Hardness
Soft annealed: 207 HB max
Not specified
Tensile Strength
700 to 850 MPa
Not specified
Yield Strength
490 MPa min
Not specified
Typical Applications
EN 10083-1 C45E
Quenched and tempered machine parts; also used normalized (clause 1.1, Table 10)
BS 970 (Part 1) 040A10
Used for bolts, studs, shafts, brackets, fabricated components, and general engineering parts.
Key Differences
EN 10083-1 C45E specifies Cr, Cr+Mo+Ni, Mo, Ni which are not specified for BS 970 (Part 1) 040A10.
Can EN 10083-1 C45E Be Substituted With BS 970 (Part 1) 040A10?
EN 10083-1 C45E and BS 970 (Part 1) 040A10 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 10083-1 C45E and BS 970 (Part 1) 040A10?
EN 10083-1 C45E specifies Cr, Cr+Mo+Ni, Mo, Ni which are not specified for BS 970 (Part 1) 040A10.
Can EN 10083-1 C45E be substituted with BS 970 (Part 1) 040A10?
EN 10083-1 C45E and BS 970 (Part 1) 040A10 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.