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BS 970 EN47 vs GB/T 1222 55CrMnA

Close Alternative — 72.3% match based on chemical composition and mechanical property overlap.

BS 970 EN47 (BS 970:1955) and GB/T 1222 55CrMnA (GB/T 1222-2016) 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 GB/T 1222 55CrMnA is commonly used for automotive leaf springs, coil springs. BS 970 EN47 is defined under British Standards (BS), originating from United Kingdom, while GB/T 1222 55CrMnA is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, BS 970 EN47 vs GB/T 1222 55CrMnA is a 72.3% 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 72.3%.

Frequently Compared With BS 970 EN47:
IS 5517 55Cr3 EN 10089 55Cr3 EN 10083-3 51CrV4 IS 3431 50Cr4V2 EN 10089 50CrV4 EN 10083-1 51CrV4 EN 10083-1 51CrV4 IS 3195 50Cr4V2 IS 3431 60Cr4V2 IS 3195 113C6 IS 1570 (Part 4) 55Si7 IS 3195 60Cr4V2
Match Breakdown
CHEMISTRY MATCH
72.3%
MECHANICAL MATCH
No shared data
OVERALL
72.3%
Specifications
Property BS 970 EN47 GB/T 1222 55CrMnA
Standard BS 970:1955 GB/T 1222-2016
Category Spring Steel Spring Steel
C (%) 0.45-0.55 0.52–0.60
Si (%) <=0.50 0.17–0.37
Mn (%) 0.50-0.80 0.70–1.00
Cr (%) 0.80-1.20 0.65–0.95
V (%) >=0.15 Not specified
S (%) <=0.050 Not specified
P (%) <=0.050 Not specified
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 EN47 GB/T 1222 55CrMnA
Tensile Strength Not specified ≥1225 MPa
Yield Strength Not specified ≥1080 MPa
Elongation Not specified ≥6%
Typical Applications
BS 970 EN47
Coil springs, leaf springs, torsion bars, valve springs, suspension springs, industrial springs requiring high fatigue life.
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
Key Differences
Can BS 970 EN47 Be Substituted With GB/T 1222 55CrMnA?
BS 970 EN47 and GB/T 1222 55CrMnA 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)
GB/T 1222 55CrMnA
Round Bar → (2 listings)
Diameter: 30–30 mm (1.18–1.18 in)
Length: 5600–7000 mm (220.47–275.59 in)
On M-EX Right Now
BS 970 EN47
4 active listings and RFQs →
GB/T 1222 55CrMnA
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN47 and GB/T 1222 55CrMnA?
BS 970 EN47 specifies V, S, P which are not specified for GB/T 1222 55CrMnA.
Can BS 970 EN47 be substituted with GB/T 1222 55CrMnA?
BS 970 EN47 and GB/T 1222 55CrMnA 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.