Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
BS 970 EN43 (BS 970:1955) and EN 10083-1 51CrV4 (EN 10083-1:1991) are both steel grades.
Both fall under the Spring Steel category.
BS 970 EN43 is typically used for bars for water hardening and tempering. laminated spring plates to conform to dimensional requirements of appendix c., while EN 10083-1 51CrV4 is commonly used for quenched and tempered machine parts; non alloy steels also normalized (clause 1).
BS 970 EN43 is defined under British Standards (BS), originating from United Kingdom, while EN 10083-1 51CrV4 is defined under European Standard (EN), originating from Europe.
As per chemical composition, BS 970 EN43 vs EN 10083-1 51CrV4 is a 74% 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
BS 970 EN43
EN 10083-1 51CrV4
Condition
Not specified
Quenched and tempered, ruling section d <= 16 mm
Elongation
Not specified
9% min
Hardness
Not specified
Soft annealed: 248 HB max
Tensile Strength
Not specified
1100 to 1300 MPa
Yield Strength
Not specified
900 MPa min
Typical Applications
BS 970 EN43
Bars for water hardening and tempering. Laminated spring plates to conform to dimensional requirements of Appendix C.
EN 10083-1 51CrV4
Quenched and tempered machine parts; non alloy steels also normalized (clause 1)
Key Differences
EN 10083-1 51CrV4 specifies Cr, V which are not specified for BS 970 EN43.
Can BS 970 EN43 Be Substituted With EN 10083-1 51CrV4?
BS 970 EN43 and EN 10083-1 51CrV4 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 BS 970 EN43 and EN 10083-1 51CrV4?
EN 10083-1 51CrV4 specifies Cr, V which are not specified for BS 970 EN43.
Can BS 970 EN43 be substituted with EN 10083-1 51CrV4?
BS 970 EN43 and EN 10083-1 51CrV4 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.