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What is alnico permanent magnet?

Alnico Magnet is an alloy made of aluminum, nickel, cobalt, copper, iron and other materials.

What is alnico permanent magnet

Aluminum nickel cobalt (Alnico Magnet) permanent magnet material was successfully developed in the 1930s. It is the first permanent magnetic material developed in history. It is an alloy composed of aluminum, nickel, cobalt, iron and other trace metal elements. Before the discovery of rare earth permanent magnet materials in 1970s, Alnico Magnet alloy was the strongest permanent magnet material. However, with the advent of ferrite permanent magnet and rare earth permanent magnet, Alnico Magnet permanent magnet was gradually replaced in many applications, and its proportion was declining.

Classification of Alnico Magnet

Because of its low mechanical strength, high hardness, brittleness and poor machinability, Alnico Magnet permanent magnet can not be designed as structural parts. Only a small amount of grinding or EDM can be carried out during machining, and forging and other machining can not be used. Alnico Magnet is mainly produced by casting method. In addition, sintered magnets corresponding to cast magnets can also be made by powder metallurgy, but the properties are slightly lower.

Properties and applications of Alnico Magnets

The advantages of Alnico Magnets are high remanence (up to 1.35t), but the disadvantages are very low coercivity (usually less than 160kA / M) and nonlinear demagnetization curve. Therefore, Alnico magnet is easy to be magnetized and demagnetized easily. Special attention should be paid to its particularity when designing and manufacturing the magnetic circuit of the device, and the magnet must be stabilized in advance. It is strictly forbidden to use it in any way Contact with ferromagnetic materials to avoid local irreversible demagnetization or distortion of magnetic flux density distribution.
In permanent magnet materials, cast Alnico Magnet permanent magnet has the lowest reversible temperature coefficient. It is suitable for the manufacture of mechanical, electrical and magnetic devices.

China Alnico Magnet Manufacturer supplies alnico magnets, casting & sintered alnico permanent magnets for scientific experiments or for industrial applications, in kinds of materials.
This product is not a toy and is not to be used by children. This product is to be used for scientific experiments or for industrial applications. This product contains strong Neodymium magnet(s) that can be harmful or fatal if swallowed. Strong Neodymium magnets are fragile, they are brittle and will break or chip if they hit a hard surface or are snagged together. Always use the utmost care when handling Neodymium magnets.

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