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BS 970 EN42 vs EN 10083-3 51CrV4

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

BS 970 EN42 (BS 970:1955) and EN 10083-3 51CrV4 (EN 10083-3:2006) 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 10083-3 51CrV4 is commonly used for valve springs, clutch springs, high duty coil springs. BS 970 EN42 is defined under British Standards (BS), originating from United Kingdom, while EN 10083-3 51CrV4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, BS 970 EN42 vs EN 10083-3 51CrV4 is a 67.9% 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 3195 50Cr4V2 EN 10083-1 51CrV4 IS 5517 55Cr3 IS 3431 50Cr4V2 IS 3195 52Cr4Mo2V
Match Breakdown
CHEMISTRY MATCH
67.9%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property BS 970 EN42 EN 10083-3 51CrV4
Standard BS 970:1955 EN 10083-3:2006
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 <=0.025
P (%) <=0.050 <=0.025
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 10083-3 51CrV4
Condition Not specified Quenched and tempered (+QT), ruling section d <= 16 mm
Elongation Not specified 9% min
Hardness Not specified Soft annealed (+A): 248 HBW 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 10083-3 51CrV4
Valve springs, clutch springs, high duty coil springs
Key Differences
Can BS 970 EN42 Be Substituted With EN 10083-3 51CrV4?
BS 970 EN42 and EN 10083-3 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 10083-3 51CrV4
Round Bar → (3 listings)
Diameter: 30–30 mm (1.18–1.18 in)
Length: 6300–7000 mm (248.03–275.59 in)
On M-EX Right Now
BS 970 EN42
3 active listings and RFQs →
EN 10083-3 51CrV4
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN42 and EN 10083-3 51CrV4?
EN 10083-3 51CrV4 specifies Cr, V which are not specified for BS 970 EN42.
Can BS 970 EN42 be substituted with EN 10083-3 51CrV4?
BS 970 EN42 and EN 10083-3 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.