Fe-Ni-alloys
Low thermal expansion alloys are materials with extremely low thermal expansion due to changes in temperature. An alloy made by adding 36% Nickel (Ni) to Iron (Fe) are commonly called invar and has very low coefficients of linear expansion of 1.2 to 2.0 x 10^-6/K near room temperature. Other typical low thermal expansion alloys include 42 Alloy (42Ni-Fe), Kovar (29Ni-Co17-Fe), and Super Invar (32Ni-5Co-Fe).
These are also used as a base metal for cladding, etc., taking advantage of its low coefficient of thermal expansion. Please contact us for more information on the types of materials we supply.
These materials have high magnetic permeability and low coercive force. Due to its excellent soft magnetic properties, it is used for magnetic cores and magnetic shielding in electronic devices.