Strong Match — 98.8% match
based on chemical composition and mechanical property overlap.
IS 3195 55Si7 (IS 3195:1992) and IS 3431 55Si7 (IS 3431:1982) are both steel grades.
Both fall under the Spring Steel category.
IS 3195 55Si7 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 55Si7 is commonly used for leaf springs,coil springs,automotive suspension springs,industrial springs,washer springs.
IS 3195 55Si7 is defined under Bureau of Indian Standards (IS), originating from India, while IS 3431 55Si7 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 3195 55Si7 vs IS 3431 55Si7 is a 98.1% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 98.8%.
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 55Si7
IS 3431 55Si7
Hardness, annealed
<=245 HB
Not specified
Hardness, untreated (hot rolled)
about 270 HB (for guidance only)
about 270 HB (reference value)
Core Hardness After Quenching
Not specified
>=54 HRC (oil, up to 20 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
1320-1570 MPa
Yield Stress (quenched and tempered)
Not specified
>=1130 MPa
Typical Applications
IS 3195 55Si7
Volute and helical springs for railway rolling stock; flats and rounds, springs worked hot and heat-treated (clause 1.1, foreword)
Can IS 3195 55Si7 Be Substituted With IS 3431 55Si7?
IS 3195 55Si7 and IS 3431 55Si7 overlap closely enough on chemistry and mechanical properties that IS 3431 55Si7 is often considered as a substitute for IS 3195 55Si7 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between IS 3195 55Si7 and IS 3431 55Si7?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 3195 55Si7 be substituted with IS 3431 55Si7?
IS 3195 55Si7 and IS 3431 55Si7 overlap closely enough on chemistry and mechanical properties that IS 3431 55Si7 is often considered as a substitute for IS 3195 55Si7 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.