A sintered magnet is the mixture of aluminum-nickel-cobalt and iron (Al-Ni-Co) that is formed under high pressure for making commercial grades of sintered Alnico 2 (unoriented) and sintered Alnico 5 & 8 (oriented) magnets and another process is used for making sintered ceramic magnets. Sintering is done on smaller size Alnico magnets to produce a better surface, high tensile strength and better homogeneity. The sintered Alnico magnets are oriented after sintering and are usually demagnetized for grinding and shipping.