Permanent Magnet Compared with soft magnets, powerful permanent magnets (also called hard magnets) should have maximum Coercivity (HcB), high Remanence (Br), high magnetic energy product (BH) Max and wide hysteresis loop to ensure maximum magnetic energy storage and magnetic stability. Permanent magnets can be divided into ferrite, rare earth strong permanent magnets (samarium cobalt and NdEeB) and AlNiCo magnets. Sintered neodymium magnet is popular as the strongest permanent magnets in the world. Neodymium rare earth permanent magnets are widely used as the type of ordinary magnets(including disc, rings, blocks, arcs) and magnet assemblies(such as cup magnets, hook magnet...). Different Types of Permanent Magnet for Sale Neodymium Magnets Neodymium( NdFeB) magnet is the most sold and used rare earth industrial permanent magnet in the market, its magnetic energy product range from 33MGOe of N35 neodymium magnets to 53MGOe of N52 neodymium magnets. The maximum operating temperature of NdFeB magnets ranges from 80 â?? for the N series to 230 â?? for the AH series. Electroplating is a unique feature of permanent neodymium magnets, The processing performance of neodymium-iron-boron material is stronger than other types of magnets.