Post Stock Login Register

IS 4367 55Si7 vs GB/T 1222 55CrMnA

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

IS 4367 55Si7 (IS 4367:1991) and GB/T 1222 55CrMnA (GB/T 1222-2016) are both steel grades. Both fall under the Spring Steel category. IS 4367 55Si7 is defined under Bureau of Indian Standards (IS), originating from India, while GB/T 1222 55CrMnA is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, IS 4367 55Si7 vs GB/T 1222 55CrMnA is a 78.1% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With IS 4367 55Si7:
IS 3431 55Si7 IS 3431 60Si7 IS 1570 (Part 4) 55Si7 IS 5517 55Cr3 IS 1570 (Part 4) 60Si7 IS 3195 55Si7 IS 1570 (Part 4) 65Si7 EN 10089 55Cr3 IS 3431 65Si7 EN 10089 50CrV4 EN 10083-3 51CrV4 EN 10089 55Si7
Match Breakdown
CHEMISTRY MATCH
78.1%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property IS 4367 55Si7 GB/T 1222 55CrMnA
Standard IS 4367:1991 GB/T 1222-2016
Category Spring Steel Spring Steel
C (%) 0.50-0.60 0.52–0.60
Si (%) 1.50-2.00 0.17–0.37
Mn (%) 0.80-1.00 0.70–1.00
S (%) <=0.035 Not specified
P (%) <=0.035 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 IS 4367 55Si7 GB/T 1222 55CrMnA
Tensile Strength 1300-1500 MPa ≥1225 MPa
Hardness 380-440 HB Not specified
Hardness (soft annealed) <=245 HB Not specified
Condition Hardened and tempered, ruling section up to 100 mm Not specified
Yield Strength Not specified ≥1080 MPa
Elongation Not specified ≥6%
Typical Applications
IS 4367 55Si7
Not documented
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
Key Differences
Can IS 4367 55Si7 Be Substituted With GB/T 1222 55CrMnA?
IS 4367 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
IS 4367 55Si7
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
IS 4367 55Si7
0 active listings and RFQs →
GB/T 1222 55CrMnA
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 4367 55Si7 and GB/T 1222 55CrMnA?
IS 4367 55Si7 specifies S, P which are not specified for GB/T 1222 55CrMnA. GB/T 1222 55CrMnA specifies Cr which is not specified for IS 4367 55Si7.
Can IS 4367 55Si7 be substituted with GB/T 1222 55CrMnA?
IS 4367 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.