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IS 3431 50Cr4V2 vs GB/T 1222 55CrMnA

Related Material — 65.8% match based on chemical composition and mechanical property overlap.

IS 3431 50Cr4V2 (IS 3431:1982) and GB/T 1222 55CrMnA (GB/T 1222-2016) are both steel grades. Both fall under the Spring Steel category. IS 3431 50Cr4V2 is typically used for valve springs,high performance automotive springs,aerospace springs,coil springs,torsion bars, while GB/T 1222 55CrMnA is commonly used for automotive leaf springs, coil springs. IS 3431 50Cr4V2 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 3431 50Cr4V2 vs GB/T 1222 55CrMnA is a 73.7% match. As per mechanical properties, the match is 50%. Combined, this makes them a related material overall at 65.8%.

Frequently Compared With IS 3431 50Cr4V2:
EN 10089 50CrV4 EN 10083-3 51CrV4 IS 3431 60Cr4V2 IS 3195 50Cr4V2 IS 3195 55Si7 IS 3195 60Cr4V2 EN 10083-1 51CrV4 IS 3195 113C6 IS 3431 60Si7 IS 3195 52Cr4Mo2V IS 3431 55Si7 EN 10083-1 51CrV4
Match Breakdown
CHEMISTRY MATCH
73.7%
MECHANICAL MATCH
50%
OVERALL
65.8%
Specifications
Property IS 3431 50Cr4V2 GB/T 1222 55CrMnA
Standard IS 3431:1982 GB/T 1222-2016
Category Spring Steel Spring Steel
C (%) 0.45-0.55 0.52–0.60
Cr (%) 0.90-1.20 0.65–0.95
Mn (%) 0.50-0.80 0.70–1.00
P (%) <=0.045 Not specified
S (%) <=0.045 Not specified
Si (%) 0.15-0.35 0.17–0.37
V (%) 0.15-0.30 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 IS 3431 50Cr4V2 GB/T 1222 55CrMnA
Core Hardness After Quenching >=54 HRC (oil, up to 25 mm round / 16 mm flat) Not specified
Elongation (quenched and tempered) >=6% Not specified
Hardness, soft annealed <=245 HB Not specified
Hardness, untreated (hot rolled) above 310 HB (reference value) Not specified
Tensile Strength (quenched and tempered) 1370-1620 MPa Not specified
Yield Stress (quenched and tempered) >=1180 MPa Not specified
Tensile Strength Not specified ≥1225 MPa
Yield Strength Not specified ≥1080 MPa
Elongation Not specified ≥6%
Typical Applications
IS 3431 50Cr4V2
valve springs,high performance automotive springs,aerospace springs,coil springs,torsion bars
GB/T 1222 55CrMnA
Automotive leaf springs, coil springs
Key Differences
Can IS 3431 50Cr4V2 Be Substituted With GB/T 1222 55CrMnA?
IS 3431 50Cr4V2 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 3431 50Cr4V2
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 6700–7000 mm (263.78–275.59 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
IS 3431 50Cr4V2
2 active listings and RFQs →
GB/T 1222 55CrMnA
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between IS 3431 50Cr4V2 and GB/T 1222 55CrMnA?
IS 3431 50Cr4V2 specifies P, S, V which are not specified for GB/T 1222 55CrMnA.
Can IS 3431 50Cr4V2 be substituted with GB/T 1222 55CrMnA?
IS 3431 50Cr4V2 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.