Alnico magnet is composed primarily of Aluminum, Nickel, Cobalt, Copper and Iron. It has very good corrosion resistance and high temperature operation. Although other materials offer greater energy and coactivity values, the high remanence and thermal stability of Alnico make it the most cost effective material for certain applications, like generator, lifting, voltmeter and measuring instruments. It is widely applied in high stability fields as aerospace, military, automobile, and security system.