Back (Co-Base)

Sm-Co magnet Sm2(Co,Fe)17

Numeric designationSm-Co-Magnet Sm2(Co,Fe)17
Chemical designationSm-Co-Magnet Sm2(Co,Fe)17
Etching3% Nital

Samarium-cobalt was the permanent magnet material with the highest magnetic energy density in the seventies. Today, neodymium-iron-boron magnets are more commonly used, but samarium-cobalt is more corrosion resistant and better suited for high temperatures.