Permalloys are highly magnetically permeable materials comprised primarily of nickel and iron. Two of the more popular permalloys are 45% nickel permalloy, Which has a high flux density, and 78% nickel permalloy, characterized by a high magnetic permeability and low eddy-current loss. Both these products are used in a range of applications that make use of their specific advantages.
The company makes permalloys for myriad applications, particularly as magnetic shields and the electromagnetic transformer units of various electronic products - the heads for audio products, stepping motors for watches, leakage breaker cores, current sensors, and more.

The magnetization of magnetic alloys changes linearly with temperature. They are therefore ideal for temperature compensation in permanent-magnet circuits, and as thermal sensors in electric appliances, among other applications.