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GB/T 1222 55CrMnA vs BS 970 EN42B

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

GB/T 1222 55CrMnA (GB/T 1222-2016) and BS 970 EN42B (BS 970:1955) are both steel grades. Both fall under the Spring Steel category. GB/T 1222 55CrMnA is defined under Guobiao Standards (GB/T), originating from China, while BS 970 EN42B is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, GB/T 1222 55CrMnA vs BS 970 EN42B is a 74.7% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 1222 55CrMnA:
EN 10089 55Si7 EN 10089 55Cr3 EN 10089 50CrV4 EN 10083-3 51CrV4 IS 3195 60Cr4V2 IS 5517 55Cr3 IS 3431 60Cr4V2 IS 3195 50Cr4V2 IS 3195 52Cr4Mo2V IS 1570 (Part 4) 55Si7 IS 4367 55Si7 IS 3195 60Si7
Match Breakdown
CHEMISTRY MATCH
74.7%
MECHANICAL MATCH
No shared data
OVERALL
35%
Specifications
Property GB/T 1222 55CrMnA BS 970 EN42B
Standard GB/T 1222-2016 BS 970:1955
Category Spring Steel Spring Steel
C (%) 0.52–0.60 0.60-0.70
Si (%) 0.17–0.37 <=0.35
Mn (%) 0.70–1.00 0.55-0.80
Cr (%) 0.65–0.95 Not specified
S (%) Not specified <=0.050
P (%) Not specified <=0.050
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GB/T 1222 55CrMnA BS 970 EN42B
Tensile Strength ≥1225 MPa Not specified
Yield Strength ≥1080 MPa Not specified
Elongation ≥6% Not specified
Typical Applications
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
BS 970 EN42B
Not documented
Key Differences
Can GB/T 1222 55CrMnA Be Substituted With BS 970 EN42B?
GB/T 1222 55CrMnA and BS 970 EN42B 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
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)
BS 970 EN42B
No active listings currently.
On M-EX Right Now
GB/T 1222 55CrMnA
2 active listings and RFQs →
BS 970 EN42B
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1222 55CrMnA and BS 970 EN42B?
GB/T 1222 55CrMnA specifies Cr which is not specified for BS 970 EN42B. BS 970 EN42B specifies S, P which are not specified for GB/T 1222 55CrMnA.
Can GB/T 1222 55CrMnA be substituted with BS 970 EN42B?
GB/T 1222 55CrMnA and BS 970 EN42B 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.