Ceramic magnets, also known as hard ferrites, are among the most economical magnetic available and are often the first materials considered when determing a magnetic solution. Due to their brittle nature these magnets will not withstand impact or flexing.They are also not recommended to be used as structural components in assemblies.

Ferrite is the lowest cost magnet material currently available, which may be why sintered ferrite magnets are so commonly found in everyday consumer applications. Many automotive small motor applications are sintered ferrite  magnets. Composed of Strontium Ferrite, these hard, brittle materials stand up well to demagnetization except in extreme cold environments. Ferrite has an approximate energy product range of 1.1-4.5 MGOe.

The charts below represent specification for anisotropic hard ferrite powders of wet pressing: