Common Trade names: Nilo 36, Invar 36, Pernifer 6, Invar 6, Nilo6
Common trade names: Invar 42, Nilo 42
42NiFe is an iron-nickel controlled expansion alloy suitable to glass sealing, with optimal chemical composition to obtain hermetic seals. Typical applications are integrated circuit lead frames, electron gun components, enamelled resistor ferrules and moulds for composite parts.
42NiFe shows almost negligible expansion up to 300°C and possesses large value of magnetic permeability. It is extensively utilized in the aerospace industries and manufacturing thermostat rods.
||Tensile Strength, N/mm²
||Yield Strength, N/mm²
||Resistivity at 20 oC (μohm.cm)
||Melting To (oC)
||Curie To (oC)
||Specific heat (J/g oC)
20 oC (W/m/oC)
- lower thermal expansion
- good magnetic permeability
- lead cables
- electronic operations
- glass sealing and vacuum equipments