Neodymium magnets (NdFeB or Neo) consist of a sintered alloy of the rare-earth element neodymium with iron and boron. The alloy has very high coercivity, magnetic remanence and energy and is stronger than any other permanent magnet material.

Neodymium magnets are manufactured in a large number of grades. The material grade determines the energy and thermal characteristics of the magnet. The value in the grade code (i.e. 52) represents the energy of the material and any following letters (if present) represent the thermal characteristics.

Neodymium magnets have a huge number of uses in industry, medicine and household products.