Many factors affect the choice of magnetic materials. Attached comparison table can help you select a right permanent magnet material for your application.
Permanent Magnet Material Comparison:
| Material |
Energy Product Maximum |
Maximum Working Temperature |
Machinability |
Resistance to demagnetization |
Relative Cost |
| NdFeB |
45 MGOe |
180 °C |
Fair |
High |
High |
| NdFeB (Bonded) |
10 MGOe |
150 °C |
Good |
High |
High |
| Sm-Co |
32 MGOe |
300 °C |
Difficult |
Very High |
Very High |
| Ferrite |
4 MGOe |
300 °C |
Fair |
Moderate |
Low |
| Rubber Magnet |
1.5 MGOe |
100 °C |
Easy |
Low |
Low |
| Alnico |
10 MGOe |
550 °C |
Difficult |
Low |
Moderate |
|
