Alloy 42 (ASTM F30)
*Alloy42,ASTM F30,UNS k94100,(Fe-42Ni),Chinese 4J42
Binary alloy with low thermal expansion coefficient.
Used on:
1.A nickel-iron controlled-expansion alloy containing 42% nickel. Leadframes for integrated circuits, thermostatic bi-metal strips and glass to metal seals.
2. It has a low and normally constant coefficient of thermal expansion.
3.Used for semiconductor lead frames in integrated circuits, bi-metal thermostats strip, thermostat rods, for ceramic-to-metal seals with alumina ceramics, and various glass-to-metal seals such as the core of copper-clad-wire for sealing into glass envelopes of electric bulbs, radio valves, television tubes and fluorescent lights.
Available in: Tube, Sheet, Strip,Bar, Rod and Wire.