Kovar - Super Alloy
Kovar is an iron based alloy with nickel and cobalt. The chemistry is closely controlled so as to result in low, uniform, thermal expansion characteristic for the alloy.
One of the primary uses for this alloy is for glass sealing of metal components, or lead wires, into hard glass or ceramic devices. It also finds use in applications where low expansion with temperature change is a desired characteristic, such as integrated circuit packaging.
Available in Kovar Rods, Kovar Bars, & Kovar Plates.
Kovar Super Alloy:
The alloy is machinable by standard methods
Ductility is good and thus forming may be done by conventional methods
Welding may be done with any of the conventional methods.