Samarium Cobalt (SmCo) Magnets

As the second generation of Rare Earth permanent magnet, SmCo not only has high energy, ranging from 14MGOe to 28MGOe, and reliable coercive force, but also exhibits the best temperature characteristics in the rare earth material family.

Compared with NdFeB, SmCo are more suitable for working in higher temperatures.

Nd-Fe-B magnets and Sm-Co magnets are the major rare earth magnetic materials supplied by Magnet City. 

Although these Neodymium and Samarium magnets can be substituted for each other where operating temperature is less than 80°C, there are some feature differences.

The price of Nd-Fe-B magnets are relatively lower. The (BH) max of Nd-Fe-B magnets can reach to 48MGOe, which is higher than that of Sm-Co magnets.

Sm-Co magnets also have some special advantages. Besides its better corrosion & oxidation resistance, Sm-Co magnets have better temperature stability. Sm-Co magnets can be operated at higher temperatures, up to 300°C, while Nd-Fe-B magnets can not stand temperature over 180°C.