Alnico magnet is a permanent magnetic material composed of aluminum (Al), nickel (Ni), cobalt (Co) and a small amount of other elements (such as iron and copper). It has the following characteristics:

Weak magnetism.

Strong anti-demagnetization ability, can still maintain magnetism at high temperature. The working temperature can be as high as 500 degrees Celsius or above.

High hardness and not easy to break.

Based on the above characteristics, Alnico magnets are mainly used in teaching magnets.