Alloy 42 is a nickel-iron alloy which is very similar to Invar 36. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 300oC (570oF). It can be hot and cold processed and machined by following the similar processing that are used for austenitic stainless steel. It possesses high magnetic permeability.
The alloy 42 is used in tooling for aerospace applications, thermostat rods, lead frames and bimetallic strips.
Invar 36 has a low coefficient of expansion from cryogenic temperatures to about 260°C. It is also retains good strength and toughness at cryogenic temperatures.
Invar 36 is used to making aerospace composites, standards of length, measuring devices, thermostat rods, laser components, clock pendulums and tanks and piping for the storage and transportation of liquefied gases.
Kovar alloy is a iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties.
Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.
With 25 years of experience in the area of alloy material manufacture, Phoenix have the complete production equipment, testing equipment, and the professional technical support. Our goods are widely used in nuclear power, aerospace, industrial furnace, petrochemical, and other industries.