Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
IS 3431 60Si7 (IS 3431:1982) and IS 5517 55Cr3 (IS 5517:1993) 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 5517 55Cr3 is defined under Bureau of Indian Standards (IS), originating from India.
As per chemical composition, IS 3431 60Si7 vs IS 5517 55Cr3 is a 71% 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 3431 60Si7
IS 5517 55Cr3
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
900-1050 MPa
Yield Strength (0.2% proof)
Not specified
660 MPa min
Elongation
Not specified
>=12%
Izod Impact
Not specified
35 J min
Hardness (annealed)
Not specified
<=220 HB
Condition
Not specified
Hardened and tempered, ruling section up to 63 mm
Typical Applications
IS 3431 60Si7
heavy duty leaf springs,suspension springs,automotive springs,railway springs,high stress spring components
IS 5517 55Cr3
Not documented
Key Differences
IS 5517 55Cr3 specifies Cr which is not specified for IS 3431 60Si7.
Can IS 3431 60Si7 Be Substituted With IS 5517 55Cr3?
IS 3431 60Si7 and IS 5517 55Cr3 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 60Si7 and IS 5517 55Cr3?
IS 5517 55Cr3 specifies Cr which is not specified for IS 3431 60Si7.
Can IS 3431 60Si7 be substituted with IS 5517 55Cr3?
IS 3431 60Si7 and IS 5517 55Cr3 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.