Minimal Match — 35% match
based on chemical composition and mechanical property overlap.
IS 5517 55Cr3 (IS 5517:1993) and IS 4367 55Si7 (IS 4367:1991) are both steel grades.
Both fall under the Spring Steel category.
IS 5517 55Cr3 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 5517 55Cr3 vs IS 4367 55Si7 is a 77.8% 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 5517 55Cr3
IS 4367 55Si7
Tensile Strength
900-1050 MPa
1300-1500 MPa
Yield Strength (0.2% proof)
660 MPa min
Not specified
Elongation
>=12%
Not specified
Izod Impact
35 J min
Not specified
Hardness (annealed)
<=220 HB
Not specified
Condition
Hardened and tempered, ruling section up to 63 mm
Hardened and tempered, ruling section up to 100 mm
Hardness
Not specified
380-440 HB
Hardness (soft annealed)
Not specified
<=245 HB
Key Differences
IS 5517 55Cr3 specifies Cr which is not specified for IS 4367 55Si7.
Can IS 5517 55Cr3 Be Substituted With IS 4367 55Si7?
IS 5517 55Cr3 and IS 4367 55Si7 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 5517 55Cr3 and IS 4367 55Si7?
IS 5517 55Cr3 specifies Cr which is not specified for IS 4367 55Si7.
Can IS 5517 55Cr3 be substituted with IS 4367 55Si7?
IS 5517 55Cr3 and IS 4367 55Si7 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.