Minimal Match — 49.7% match
based on chemical composition and mechanical property overlap.
IS 5517 40Cr4 (IS 5517:1993) and NF A35-565 100C6 are both steel grades.
Both fall under the Alloy Steel category.
IS 5517 40Cr4 is defined under Bureau of Indian Standards (IS), originating from India, while NF A35-565 100C6 is defined under Association Francaise de Normalisation (NF), originating from France.
As per chemical composition, IS 5517 40Cr4 vs NF A35-565 100C6 is a 74.5% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a minimal match overall at 49.7%.
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 40Cr4
NF A35-565 100C6
Tensile Strength
700-850 MPa
850-1100 MPa
Yield Strength (0.2% proof)
540 MPa min
Not specified
Elongation
>=18%
Not specified
Izod Impact
55 J min
Not specified
Hardness (annealed)
<=241 HB
Not specified
Condition
Hardened and tempered, ruling section up to 100 mm
Can IS 5517 40Cr4 Be Substituted With NF A35-565 100C6?
IS 5517 40Cr4 and NF A35-565 100C6 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 40Cr4 and NF A35-565 100C6?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can IS 5517 40Cr4 be substituted with NF A35-565 100C6?
IS 5517 40Cr4 and NF A35-565 100C6 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.