Alnico magnets are composed primarily of alloys of aluminum, nickel, cobalt, copper, iron, and sometimes titanium, which possess characteristics like high residual induction and excellent temperature stability . Alnico products are widely used in applications such as meters, motors and sensors. Alnico magnets have a variety of shapes and sizes. Some of the common shapes are blocks , discs , rings , horseshoes , bars and holding magnets . Some of them can be painted with red or blue.