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GB/T 1222 55CrMnA vs EN 10089 55Si7

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

GB/T 1222 55CrMnA (GB/T 1222-2016) and EN 10089 55Si7 (EN 10089:2002) are both steel grades. Both fall under the Spring Steel category. GB/T 1222 55CrMnA is typically used for automotive leaf springs, coil springs, while EN 10089 55Si7 is commonly used for leaf springs, coil springs, torsion bars. GB/T 1222 55CrMnA is defined under Guobiao Standards (GB/T), originating from China, while EN 10089 55Si7 is defined under European Standard (EN), originating from Europe.

As per chemical composition, GB/T 1222 55CrMnA vs EN 10089 55Si7 is a 81.5% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 1222 55CrMnA:
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 BS 970 EN42B
Match Breakdown
CHEMISTRY MATCH
81.5%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GB/T 1222 55CrMnA EN 10089 55Si7
Standard GB/T 1222-2016 EN 10089:2002
Category Spring Steel Spring Steel
C (%) 0.52–0.60 0.51–0.59
Si (%) 0.17–0.37 1.50–2.00
Mn (%) 0.70–1.00 0.70–1.00
Cr (%) 0.65–0.95 Not specified
S (%) Not specified ≤0.040
P (%) Not specified ≤0.040
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 EN 10089 55Si7
Tensile Strength ≥1225 MPa 1000–1200 MPa
Yield Strength ≥1080 MPa ≥900 MPa
Elongation ≥6% ≥7%
Hardness Not specified 285–363 HB
Typical Applications
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
EN 10089 55Si7
Leaf springs, coil springs, torsion bars
Key Differences
Can GB/T 1222 55CrMnA Be Substituted With EN 10089 55Si7?
GB/T 1222 55CrMnA and EN 10089 55Si7 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)
EN 10089 55Si7
Round Bar → (3 listings)
Diameter: 30–30 mm (1.18–1.18 in)
Length: 4200–7000 mm (165.35–275.59 in)
On M-EX Right Now
GB/T 1222 55CrMnA
2 active listings and RFQs →
EN 10089 55Si7
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1222 55CrMnA and EN 10089 55Si7?
GB/T 1222 55CrMnA specifies Cr which is not specified for EN 10089 55Si7. EN 10089 55Si7 specifies S, P which are not specified for GB/T 1222 55CrMnA.
Can GB/T 1222 55CrMnA be substituted with EN 10089 55Si7?
GB/T 1222 55CrMnA and EN 10089 55Si7 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.