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EN 10089 55Si7 vs GB/T 1222 55CrMnA

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

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

As per chemical composition, EN 10089 55Si7 vs GB/T 1222 55CrMnA 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 EN 10089 55Si7:
EN 10089 50CrV4 EN 10083-3 51CrV4 EN 10089 55Cr3 IS 1570 (Part 4) 55Si7 IS 1570 (Part 4) 65Si7 IS 1570 (Part 4) 60Si7 IS 4367 55Si7 IS 5517 55Cr3 BS 970 EN42B IS 3195 113C6 IS 3431 50Cr4V2 IS 3195 50Cr4V2
Match Breakdown
CHEMISTRY MATCH
81.5%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property EN 10089 55Si7 GB/T 1222 55CrMnA
Standard EN 10089:2002 GB/T 1222-2016
Category Spring Steel Spring Steel
C (%) 0.51–0.59 0.52–0.60
Si (%) 1.50–2.00 0.17–0.37
Mn (%) 0.70–1.00 0.70–1.00
S (%) ≤0.040 Not specified
P (%) ≤0.040 Not specified
Cr (%) Not specified 0.65–0.95
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN 10089 55Si7 GB/T 1222 55CrMnA
Tensile Strength 1000–1200 MPa ≥1225 MPa
Yield Strength ≥900 MPa ≥1080 MPa
Elongation ≥7% ≥6%
Hardness 285–363 HB Not specified
Typical Applications
EN 10089 55Si7
Leaf springs, coil springs, torsion bars
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
Key Differences
Can EN 10089 55Si7 Be Substituted With GB/T 1222 55CrMnA?
EN 10089 55Si7 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
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)
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
EN 10089 55Si7
3 active listings and RFQs →
GB/T 1222 55CrMnA
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN 10089 55Si7 and GB/T 1222 55CrMnA?
EN 10089 55Si7 specifies S, P which are not specified for GB/T 1222 55CrMnA. GB/T 1222 55CrMnA specifies Cr which is not specified for EN 10089 55Si7.
Can EN 10089 55Si7 be substituted with GB/T 1222 55CrMnA?
EN 10089 55Si7 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.