Alnico magnets are made from an alloy of ALuminum, NIckle and CObalt, hence the name. In addition to the above three, there can also be other metals added to the composition at times like Titanium and Copper. By varying the composition it is possible to tailor the magnetic properties to meet the needs of a wide variety of user ended applications.

They can be divided into two main kinds:1.Cast alnico magnets that are made by pouring melted alnico into a mold. The solidified material is rough ground and then heat treated and cooled. The material is either anisotropic (treated in a magnetic field) or isotropic (treated outside a magnetic field). After treatment the material is ground to specific tolerances and magnetized.
2.Sintered alnico magnets are made from a powdered mixture of ingredients that are pressed into a die under tons of pressure. They are then sintered in a hydrogen atmosphere and cooled in an anisotropic or isotropic environment.

AlNiCo magnet characters are as follows,
1, Compact crystal, high intensity, good chemistry Stability, strong anti-corrosion.
2, Even elements, excellent and stable magnetic performance;
3, Excellent temperature stability (temp. coefficient of Br is the smallest among all of the other permanent magnets. )
4, Highest usage temperature reach 500 centigrade.
5, Suitable for small volume and complex shape and magnet assemble for sintered Alnico.