NILO 42
UNS K94100, ASTM F 29, F 30 , DIN 385, 17745 ,Werkstoff Nr. 1.3917
Overview:A nickel-iron controlled-expansionalloy containing 42% nickel. It has a low and nominally constant coefficient ofthermal expansion from room temperature to about 570°F (300°C). Used forsemiconductor lead frames in integrated circuits, bi-metal thermostat strip,thermostat rods, for ceramic-to-metal seals with alumina ceramics and variousglass-to-metal seals such as: the core of copper-clad wire for sealing intoglass envelopes of electric bulbs, radio valves, television tubes andfluorescent lights.
STANDARD PRODUCT FORMS
Strip, plate and wire.
LIMITING CHEMICAL COMPOSITION, %
Ni | Fe | C | Mn | P | S | Si | Cr | Al | Co |
42 | Remainder | 0.05 max. | .0.80 max | 0.025 max | 0.025 max | .0.30 max. | .0.25 max | .0.15 max | 1.0 max. |
A Nominal value; adjusted to meetexpansion requirements.
PHYSICAL CONSTANTS AND THERMAL PROPERTIES
Density, Ib/in3 -0.293 g/cm3 -8.11
Melting Temperature (Approximate), 2615°F.........1435°C
Inflection Point, 700°F.............370°C
