Close Alternative — 73.3% match
based on chemical composition and mechanical property overlap.
IS 3431 60Si7 (IS 3431:1982) and IS 4367 55Si7 (IS 4367:1991) are both steel grades.
Both fall under the Spring Steel category.
IS 3431 60Si7 is defined under Bureau of Indian Standards (IS), originating from India, while IS 4367 55Si7 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 3431 60Si7 vs IS 4367 55Si7 is a 93.2% match.
As per mechanical properties, the match is 33.3%.
Combined, this makes them a close alternative overall at 73.3%.
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 60Si7
IS 4367 55Si7
Core Hardness After Quenching
>=54 HRC (oil, up to 20 mm round / 16 mm flat)
Not specified
Elongation (quenched and tempered)
>=6%
Not specified
Hardness, soft annealed
<=255 HB
Not specified
Hardness, untreated (hot rolled)
about 310 HB (reference value)
Not specified
Tensile Strength (quenched and tempered)
1320-1570 MPa
Not specified
Yield Stress (quenched and tempered)
>=1130 MPa
Not specified
Tensile Strength
Not specified
1300-1500 MPa
Hardness
Not specified
380-440 HB
Hardness (soft annealed)
Not specified
<=245 HB
Condition
Not specified
Hardened and tempered, ruling section up to 100 mm
Typical Applications
IS 3431 60Si7
heavy duty leaf springs,suspension springs,automotive springs,railway springs,high stress spring components
IS 4367 55Si7
Not documented
Can IS 3431 60Si7 Be Substituted With IS 4367 55Si7?
IS 3431 60Si7 and IS 4367 55Si7 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between IS 3431 60Si7 and IS 4367 55Si7?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 3431 60Si7 be substituted with IS 4367 55Si7?
IS 3431 60Si7 and IS 4367 55Si7 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.