... high working temperature and better to be machined into precise sizes, complicated shape. Advantage of Sintered AlNico Magnet: high ... : high working temperature and better to be machined into various sizes, complicated shape of high precision. AlNico magnets have high ... density, anticorrosion and hardness.3. Customized Coating & Sizes Available Surface treatment: Ni, Zn, epoxy, gold, tin, ...