Related Material — 56.2% match
based on chemical composition and mechanical property overlap.
IS 3431 50Cr4V2 (IS 3431:1982) and EN 10083-3 51CrV4 (EN 10083-3:2006) 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 EN 10083-3 51CrV4 is commonly used for valve springs, clutch springs, high duty coil springs.
IS 3431 50Cr4V2 is defined under Bureau of Indian Standards (IS), originating from India, while EN 10083-3 51CrV4 is defined under European Standard (EN), originating from Europe.
As per chemical composition, IS 3431 50Cr4V2 vs EN 10083-3 51CrV4 is a 84.3% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a related material overall at 56.2%.
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
EN 10083-3 51CrV4
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
Condition
Not specified
Quenched and tempered (+QT), ruling section d <= 16 mm
Valve springs, clutch springs, high duty coil springs
Can IS 3431 50Cr4V2 Be Substituted With EN 10083-3 51CrV4?
IS 3431 50Cr4V2 and EN 10083-3 51CrV4 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.
What is the difference between IS 3431 50Cr4V2 and EN 10083-3 51CrV4?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 3431 50Cr4V2 be substituted with EN 10083-3 51CrV4?
IS 3431 50Cr4V2 and EN 10083-3 51CrV4 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.