Super Strong Sintered NdFeB Disc Magnet

Super Strong Sintered NdFeB Disc Magnet For as-pressed material, tolerance on the thickness (direction of magnetization) is +/– .005". Other dimensions are +/– 2.5% or +/– .005", whichever is greater.According to International Magnetics Association/Magnet Materials Producers Association (IMA/MMPA) standards, visual imperfections such as hairline cracks, porosity and minor chips are commonly found in sintered magnets. A chipped edge is considered acceptable if no more than 10% of the surface is missing. Cracks are acceptable as long as they do not extend across more than 50% of the pole`s surface. The maximum application temperature is 200 °C for high coercivity grades. Nd-Fe-B magnets are more prone to oxidation than any other magnet alloys. If Nd-Fe-B magnet is to be exposed to humidity, chemically aggressive media such as acids, alkaline solutions salts and harmful gases, coating is recommended. It is not recommended in a hydrogen atmosphere. More round magnets photo details: Material NdfeB Grade N35 Diameter 40mm Thickness 3mm Magnetizing Direction Axial Magnetization(Thickness)