SmCo is a high performance, low temperature coefficient permanent magnet with its high working temperature-350 degree centigrade. When working above 180 degree centigrade, its maximum energy product BH and steady temperature are superior than NdFeB magnetic materials. Sintered SmCo needn't to be coated because it is difficult to be eroded and oxidized. Sintered SmCo is widely used in motors, watches, transducers, instruments, positional detectors, generators, radar communications, medical equipments, various smagnetism spreading devices, magnetic processors, electrical engineering and magnetic derricks.
Samarium Cobalt permanent magnet is widely used second generation high energy material. Using Samarium and Cobalt as its rare earth element, it exhibits high magnetic performance characteristics in energy product and coercive force. There are two compositions of magnets in this family: Sm1Co5 and Sm2Co17. The highest commercially available energy products of Sm2Co 17 are in the 30MGOe range.

Samarium Cobalt holds its standard property in higher maximum temperatures than neodymium,although its maximum strengh is less. The cost of SmCo material is the most expensive,so SmCo is recommended only when its performance is a high temperature environment is a concern.
The characteristics of Samarium Cobalt Magnet
Very high magnetic properties with good stability.
Superior resistance to high temperature,Curie temperature of majority is over 800oC
Excellent corrosion resistance capability,no coating is needed for surface protection.
Typical Magnetic Porperties of Samarium Cobalt Materials
SmCo magnets, made from cobalt and samarium and other rare-earth elements, is a high performance permanent magnet. Its biggest advantage is its high working temperature up to 300 degree centigrade. In the meantime, its higher corrosion and oxidation resistance are also crucial. So for SmCo magnets, it usually need not be plated with other metal and can be widely used in motors, watch, transducers, instruments, positional detector, generators, radar and etc.