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BS 970 EN47 vs BS 970 EN50

Close Alternative — 81.4% match based on chemical composition and mechanical property overlap.

BS 970 EN47 (BS 970:1955) and BS 970 EN50 (BS 970:1955) are both steel grades. Both fall under the Spring Steel category. BS 970 EN47 is typically used for coil springs, leaf springs, torsion bars, valve springs, suspension springs, industrial springs requiring high fatigue life., while BS 970 EN50 is commonly used for annealed wire for oil-hardened and tempered springs; covered by bs 1429.. BS 970 EN47 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN50 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN47 vs BS 970 EN50 is a 81.4% 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 81.4%.

Frequently Compared With BS 970 EN47:
IS 5517 55Cr3 EN 10089 55Cr3 IS 3431 50Cr4V2 EN 10083-3 51CrV4 EN 10089 50CrV4 EN 10083-1 51CrV4 EN 10083-1 51CrV4 GB/T 1222 55CrMnA IS 3195 50Cr4V2 IS 1570 (Part 4) 55Si7 IS 3195 113C6 IS 3431 60Cr4V2
Match Breakdown
CHEMISTRY MATCH
81.4%
MECHANICAL MATCH
No shared data
OVERALL
81.4%
Specifications
Property BS 970 EN47 BS 970 EN50
Standard BS 970:1955 BS 970:1955
Category Spring Steel Spring Steel
C (%) 0.45-0.55 0.40-0.50
Si (%) <=0.50 0.10-0.35
Mn (%) 0.50-0.80 0.50-0.70
Cr (%) 0.80-1.20 1.00-1.50
V (%) >=0.15 >=0.15
S (%) <=0.050 <=0.040
P (%) <=0.050 <=0.040
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 EN47
Coil springs, leaf springs, torsion bars, valve springs, suspension springs, industrial springs requiring high fatigue life.
BS 970 EN50
Annealed wire for oil-hardened and tempered springs; covered by BS 1429.
Can BS 970 EN47 Be Substituted With BS 970 EN50?
BS 970 EN47 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
BS 970 EN47
Round Bar → (4 listings)
Diameter: 40–40 mm (1.57–1.57 in)
Length: 5700–6400 mm (224.41–251.97 in)
BS 970 EN50
No active listings currently.
On M-EX Right Now
BS 970 EN47
4 active listings and RFQs →
BS 970 EN50
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN47 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 BS 970 EN47 be substituted with BS 970 EN50?
BS 970 EN47 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.