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AlNiCo Ring Magnet is comprised of aluminum, nickel, cobalt, and iron with varying additions of other elements. There are two different manufacturing processes for AlNiCo: Cast and sintered. Cast AlNiCo can be made into many sizes and shapes, whereas Sintered AlNiCo is usually restricted to smaller sizes. However, both processes lead to complex geometries and configurations. Standard Sintered AlNiCo has tighter dimensional tolerances due to its processing. It also has slightly lower magnetic properties, but better mechanical strength than Cast AlNiCo products.