SmCo magnet is a high performance, low temperature coef f icent permanent magnet which is made of samarium and cobal t and other rare-earth elements. The high working temperature up to 350 degree cent igrade is i ts biggest advantage. I t needn' t to be coated because i t is di f f icul t to be eroded and oxidized. SmCo magnet is widely used in motors, watches, transducers, instruments, posi t ional detectors, generators, radars and etc.