Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
IS 3195 65Si7 (IS 3195:1992) and IS 3431 50Cr4V2 (IS 3431:1982) are both steel grades.
Both fall under the Spring Steel category.
IS 3195 65Si7 is typically used for volute and helical springs for railway rolling stock; flats and rounds, springs worked hot and heat-treated (clause 1.1, foreword), while IS 3431 50Cr4V2 is commonly used for valve springs,high performance automotive springs,aerospace springs,coil springs,torsion bars.
IS 3195 65Si7 is defined under Bureau of Indian Standards (IS), originating from India, while IS 3431 50Cr4V2 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 3195 65Si7 vs IS 3431 50Cr4V2 is a 62% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 35%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
IS 3195 65Si7
IS 3431 50Cr4V2
Hardness, annealed
<=245 HB
Not specified
Hardness, untreated (hot rolled)
about 255 HB (for guidance only)
above 310 HB (reference value)
Core Hardness After Quenching
Not specified
>=54 HRC (oil, up to 25 mm round / 16 mm flat)
Elongation (quenched and tempered)
Not specified
>=6%
Hardness, soft annealed
Not specified
<=245 HB
Tensile Strength (quenched and tempered)
Not specified
1370-1620 MPa
Yield Stress (quenched and tempered)
Not specified
>=1180 MPa
Typical Applications
IS 3195 65Si7
Volute and helical springs for railway rolling stock; flats and rounds, springs worked hot and heat-treated (clause 1.1, foreword)
IS 3431 50Cr4V2 specifies Cr, V which are not specified for IS 3195 65Si7.
Can IS 3195 65Si7 Be Substituted With IS 3431 50Cr4V2?
IS 3195 65Si7 and IS 3431 50Cr4V2 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 3195 65Si7 and IS 3431 50Cr4V2?
IS 3431 50Cr4V2 specifies Cr, V which are not specified for IS 3195 65Si7.
Can IS 3195 65Si7 be substituted with IS 3431 50Cr4V2?
IS 3195 65Si7 and IS 3431 50Cr4V2 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.