Close Alternative — 72.9% match
based on chemical composition and mechanical property overlap.
EN 10083-1 51CrV4 (EN 10083-1:1996) and BS 970 EN50 (BS 970:1955) are both steel grades.
Both fall under the Spring Steel category.
EN 10083-1 51CrV4 is typically used for quenched and tempered machine parts (clause 1.1), while BS 970 EN50 is commonly used for annealed wire for oil-hardened and tempered springs; covered by bs 1429..
EN 10083-1 51CrV4 is defined under European Standard (EN), originating from Europe, while BS 970 EN50 is defined under British Standards (BS), originating from United Kingdom.
As per chemical composition, EN 10083-1 51CrV4 vs BS 970 EN50 is a 72.9% match.
Mechanical property data is not available for both grades, so this factor could not be scored.
Combined, this makes them a close alternative overall at 72.9%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
EN 10083-1 51CrV4
BS 970 EN50
Condition
Quenched and tempered, ruling section d <= 16 mm
Not specified
Elongation
9% min
Not specified
Hardness
Soft annealed: 248 HB max
Not specified
Tensile Strength
1100 to 1300 MPa
Not specified
Yield Strength
900 MPa min
Not specified
Typical Applications
EN 10083-1 51CrV4
Quenched and tempered machine parts (clause 1.1)
BS 970 EN50
Annealed wire for oil-hardened and tempered springs; covered by BS 1429.
Can EN 10083-1 51CrV4 Be Substituted With BS 970 EN50?
EN 10083-1 51CrV4 and BS 970 EN50 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between EN 10083-1 51CrV4 and BS 970 EN50?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can EN 10083-1 51CrV4 be substituted with BS 970 EN50?
EN 10083-1 51CrV4 and BS 970 EN50 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.