Rare-earth Materials
Rare-Earth Magnets are of higher performance than Non-Rare-Earth Magnets.

Nd-Fe-B magnets (both Sintered and Bonded) and Sm-Co magnets (Sintered) are the major Rare-Earth magnetic materials of Real magnetic.

Although these two magnets can be substituted by each other where operating temperature is less than 80H, there still exits some feature differences. The price of Nd-Fe-B magnets is relatively lower. The (BH) max of Nd-Fe-B magnets can reach to 48MGOe, which is higher than that of Sm-Co magnets. However, Sm-Co magnets have special advantages also. Besides its better corrosion & oxidation resistance, Sm-Co magnets have better temperature stability. Sm-Co magnets can be operated at higher temperature up to 300H, while Nd-Fe-B magnets can not stand temperature over 180H.