A nickel-iron controlled-expansion alloy containing 42% nickel. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 570°F (300°C). Used for semiconductor lead frames in integrated circuits, bi-metal thermostat 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.
Standard lengths of 2000 mm up to 6000 mm. Cut to size on request (tolerance +2/-0 mm).
Sheets / Plates
Dimensions: widths 1000/1220/1500 mm, lengths 2000/2500/3000 mm.
¹ Nominal value; adjusted to meet expansion requirements.