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