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NILO® alloy 42

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.

UNS: K94100
W.Nr.: 1.39717

Technical Bulletin (PDF, 229KB)

Available Product Forms: Strip, plate and wire

Technical Papers
The NILO Nickel-Iron Alloys for Composite Tooling (PDF, 415K)

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