Neodymium Permanent Magnet (also known as NdFeB, NIB or Neo magnet ), the most widely used type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure. Multiple choices of shapes can meet specific customer requirements. Magnet Grades. The Grade of a magnet generally indicates how “strong” a magnet ...