... ,N52.. Product specifications:1. Neodymium rare earth block magnets with different grades of: N35,N38,N40,N42,N45,N48,N50,N52 ... super strong magnetic force and high intrinsic coercive force.6, With precise tolerance.Application for Neodymium magnet:Magnetic separator, Sensors, ... working temperature, as high as 200 centigrade.All These special features of NdFeN material make it irreplaceable in the world ...