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EN 10083-3 51CrV4 vs BS 970 EN50

Close Alternative — 71.5% match based on chemical composition and mechanical property overlap.

EN 10083-3 51CrV4 (EN 10083-3:2006) and BS 970 EN50 (BS 970:1955) are both steel grades. Both fall under the Spring Steel category. EN 10083-3 51CrV4 is typically used for valve springs, clutch springs, high duty coil springs, while BS 970 EN50 is commonly used for annealed wire for oil-hardened and tempered springs; covered by bs 1429.. EN 10083-3 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 10083-3 51CrV4 vs BS 970 EN50 is a 71.5% 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 71.5%.

Frequently Compared With EN 10083-3 51CrV4:
EN 10089 50CrV4 EN 10089 55Si7 EN 10089 55Cr3 GB/T 1222 55CrMnA IS 3431 50Cr4V2 EN 10083-1 51CrV4 IS 1570 (Part 4) 55Si7 IS 5517 55Cr3 EN 10083-1 51CrV4 IS 3195 55Si7 IS 3431 60Cr4V2 IS 3195 52Cr4Mo2V
Match Breakdown
CHEMISTRY MATCH
71.5%
MECHANICAL MATCH
No shared data
OVERALL
71.5%
Specifications
Property EN 10083-3 51CrV4 BS 970 EN50
Standard EN 10083-3:2006 BS 970:1955
Category Spring Steel Spring Steel
C (%) 0.47-0.55 0.40-0.50
Cr (%) 0.90-1.20 1.00-1.50
Mn (%) 0.70-1.10 0.50-0.70
P (%) <=0.025 <=0.040
S (%) <=0.025 <=0.040
Si (%) <=0.40 0.10-0.35
V (%) 0.10-0.25 >=0.15
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10083-3 51CrV4 BS 970 EN50
Condition Quenched and tempered (+QT), ruling section d <= 16 mm Not specified
Elongation 9% min Not specified
Hardness Soft annealed (+A): 248 HBW max Not specified
Tensile Strength 1100 to 1300 MPa Not specified
Yield Strength 900 MPa min Not specified
Typical Applications
EN 10083-3 51CrV4
Valve springs, clutch springs, high duty coil springs
BS 970 EN50
Annealed wire for oil-hardened and tempered springs; covered by BS 1429.
Can EN 10083-3 51CrV4 Be Substituted With BS 970 EN50?
EN 10083-3 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.
Forms & Sizes Available on M-EX
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)
BS 970 EN50
No active listings currently.
On M-EX Right Now
EN 10083-3 51CrV4
3 active listings and RFQs →
BS 970 EN50
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10083-3 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 10083-3 51CrV4 be substituted with BS 970 EN50?
EN 10083-3 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.