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BS 970 EN48 vs GB/T 1222 55CrMnA

Close Alternative — 76.4% match based on chemical composition and mechanical property overlap.

BS 970 EN48 (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 EN48 is typically used for high duty springs, valve springs, while GB/T 1222 55CrMnA is commonly used for automotive leaf springs, coil springs. BS 970 EN48 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 EN48 vs GB/T 1222 55CrMnA is a 76.4% 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 76.4%.

Frequently Compared With BS 970 EN48:
EN 10089 50CrV4 EN 10083-3 51CrV4 EN 10089 55Cr3 EN 10089 55Si7 IS 3431 50Cr4V2 IS 3195 50Cr4V2 IS 3195 113C6 IS 3195 60Cr4V2 IS 5517 55Cr3 EN 10083-1 51CrV4 EN 10083-1 51CrV4 IS 3431 60Cr4V2
Match Breakdown
CHEMISTRY MATCH
76.4%
MECHANICAL MATCH
No shared data
OVERALL
76.4%
Specifications
Property BS 970 EN48 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 (%) 0.10-0.50 0.17–0.37
Mn (%) 0.50-0.80 0.70–1.00
Cr (%) 1.00-1.40 0.65–0.95
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 EN48 GB/T 1222 55CrMnA
Tensile Strength Not specified ≥1225 MPa
Yield Strength Not specified ≥1080 MPa
Elongation Not specified ≥6%
Typical Applications
BS 970 EN48
High duty springs, valve springs
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
Key Differences
Can BS 970 EN48 Be Substituted With GB/T 1222 55CrMnA?
BS 970 EN48 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 EN48
Flat Bar → (3 listings)
Thickness: 30–30 mm (1.18–1.18 in)
Width: 150–150 mm (5.91–5.91 in)
Length: 2500–2800 mm (98.43–110.24 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 EN48
3 active listings and RFQs →
GB/T 1222 55CrMnA
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN48 and GB/T 1222 55CrMnA?
BS 970 EN48 specifies S, P which are not specified for GB/T 1222 55CrMnA.
Can BS 970 EN48 be substituted with GB/T 1222 55CrMnA?
BS 970 EN48 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.