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BS 970 EN42 vs EN 10083-1 51CrV4

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

BS 970 EN42 (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 EN42 is typically used for springs, chisels, punches, cutting tools, while EN 10083-1 51CrV4 is commonly used for quenched and tempered machine parts; non alloy steels also normalized (clause 1). BS 970 EN42 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 EN42 vs EN 10083-1 51CrV4 is a 69% 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%.

Frequently Compared With BS 970 EN42:
BS 970 EN42C BS 970 EN42F BS 970 EN42G BS 970 EN42B BS 970 EN42D IS 3195 113C6 EN 10089 50CrV4 IS 5517 55Cr3 IS 3431 50Cr4V2 IS 3195 50Cr4V2 EN 10083-3 51CrV4 IS 3195 52Cr4Mo2V
Match Breakdown
CHEMISTRY MATCH
69%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN42 EN 10083-1 51CrV4
Standard BS 970:1955 EN 10083-1:1991
Category Spring Steel Spring Steel
C (%) 0.70-0.85 0.47-0.55
Si (%) 0.10-0.40 <=0.40
Mn (%) 0.55-0.75 0.70-1.10
S (%) <=0.050 <=0.035
P (%) <=0.050 <=0.035
Cr (%) Not specified 0.90-1.20
V (%) Not specified 0.10-0.25
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 EN42 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 EN42
Springs, chisels, punches, cutting tools
EN 10083-1 51CrV4
Quenched and tempered machine parts; non alloy steels also normalized (clause 1)
Key Differences
Can BS 970 EN42 Be Substituted With EN 10083-1 51CrV4?
BS 970 EN42 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.
Forms & Sizes Available on M-EX
BS 970 EN42
Round Bar → (3 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5200–6900 mm (204.72–271.65 in)
EN 10083-1 51CrV4
No active listings currently.
On M-EX Right Now
BS 970 EN42
3 active listings and RFQs →
EN 10083-1 51CrV4
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN42 and EN 10083-1 51CrV4?
EN 10083-1 51CrV4 specifies Cr, V which are not specified for BS 970 EN42.
Can BS 970 EN42 be substituted with EN 10083-1 51CrV4?
BS 970 EN42 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.