Nilo K

Nilo K is a nickel-iron-cobalt controlled-expansion alloy containing 29% nickel. Its coefficient of expansion which decreases with rising temperature to the inflection point matches the expansion rate of borosilicate glasses and alumina ceramics. Used for glass-to-metal seals in applications requiring high reliability or resistance to thermal shock. Examples are high-power transmitting valves transistor leads and headers integrated-circuit lead frames and photography flash bulbs.

Chemistry By % Weight
C: 0.02% Max
Co: 17%
Fe: Balance
Mn: 0.3%
Ni: 29%
Si: 0.2%

Coefficient of Thermal Expansion (Nominal):
30A C - 200A C 5.5 (x 10-6 m/m a c K)
30A C - 300A C 5.1
30A C - 400A C 4.9
30A C - 450A C 5.3
30A C - 500A C 6.2
30A C - 600A C 7.9
30A C - 700A C 9.3
30A C - 800A C 10.4
30A C - 900A C 11.5
Applications
Power tubes microwave tubes transistors diodes hybrid packages and other kinds of scientific instruments.

Available Product Forms: Tube sheet round barplateetc.