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BS 970 EN48A vs GB/T 1222 55CrMnA

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

BS 970 EN48A (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 EN48A is typically used for bars for oil hardening and tempering. laminated spring plates to this specification shall conform to the dimensional requirements in appendix c., while GB/T 1222 55CrMnA is commonly used for automotive leaf springs, coil springs. BS 970 EN48A 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 EN48A vs GB/T 1222 55CrMnA is a 83.1% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With BS 970 EN48A:
IS 5517 55Cr3 EN 10083-3 51CrV4 EN 10089 55Cr3 IS 3195 113C6 IS 3431 50Cr4V2 IS 3195 50Cr4V2 EN 10089 50CrV4 EN 10083-1 51CrV4 IS 3195 52Cr4Mo2V EN 10083-1 51CrV4 IS 1570 (Part 4) 55Si7 IS 4367 55Si7
Match Breakdown
CHEMISTRY MATCH
83.1%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property BS 970 EN48A GB/T 1222 55CrMnA
Standard BS 970:1955 GB/T 1222-2016
Category Spring Steel Spring Steel
C (%) 0.50-0.60 0.52–0.60
Si (%) 1.35-1.65 0.17–0.37
Mn (%) 0.60-0.90 0.70–1.00
Cr (%) 0.55-0.85 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 EN48A GB/T 1222 55CrMnA
Tensile Strength Not specified ≥1225 MPa
Yield Strength Not specified ≥1080 MPa
Elongation Not specified ≥6%
Typical Applications
BS 970 EN48A
Bars for oil hardening and tempering. Laminated spring plates to this specification shall conform to the dimensional requirements in Appendix C.
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
Key Differences
Can BS 970 EN48A Be Substituted With GB/T 1222 55CrMnA?
BS 970 EN48A and GB/T 1222 55CrMnA 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 EN48A
No active listings currently.
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 EN48A
0 active listings and RFQs →
GB/T 1222 55CrMnA
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 EN48A and GB/T 1222 55CrMnA?
BS 970 EN48A specifies S, P which are not specified for GB/T 1222 55CrMnA.
Can BS 970 EN48A be substituted with GB/T 1222 55CrMnA?
BS 970 EN48A and GB/T 1222 55CrMnA 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.