... ,H,SH,UH,EH, Coating:Zn,Ni,Gold,silver, Application:medicine,machines. N35 sintered rare earth block NdFeb magnets in machines1. chemical ... 30KOe. 5. very brittle and hard, but lighter than other rare earth magnetic material.6. higher resistance to demagnetion than other ... it’s easily oxidized. Coating option: Ni, Zn, Eploxy, Cu, silver, gold, etc.9. Application: generators, DC motors, servo motors, air ...