This kind of magnet has very good corrosion resistance and extreme temperature resistance. It is extremely stable for temperature changes. AlNiCo magnets are made from Aluminum, Nickle, Cobalt and iron. It has excellent corrosion resistance and temperature stability. It is hard, but brittle. It can be made in complex shapes. It has the characteristics of high induction remanence, specific energy and a lower variation to temperature. It can be used at extremely high operating temperature. It’s widely used in motors, instruments, meters, loudspeaker, magnetic holding system and etc.