Alnico Magnets

AO Magnet Electronic (ISO9001:2008 Certified) have been producing alnico magnets from 1998 in China. Alnico magnets (including Cast alnico Magnets - Sintered alnico Magnets), are made up of a composite of aluminum, nickel and cobalt with small amounts of other elements, have good temperature stability, good resistance to demagnetization, high residual induction, and relatively high energies. By strength, they are much weaker than Neodymium magnets, SmCo magnets and Ferrite magnets.

Alnico magnets, which can be customized, are produced by two typical methods, casting or sintering. Casting delivers higher energy products and allows for the design of intricate shapes. Sintering is usually restricted to smaller sizes and offers slightly lower magnetic properties, but has tighter dimensional tolerances due to its processing. Alnico magnets can be produced with either isotropic or anisotropic properties. Alnico 5 and Alnico 8 are anisotropic and exhibit a preferred direction of orientation, Magnetic orientation should be specified on your drawing when you send an order to us. Cast Alnico 5 is the most commonly used of all the cast Alnico's. It combines high indications with a high energy product of 5 MGOe or more and is used extensively in rotation machinery, communications, meters and instruments, sensing devices and holding applications.

cast alnico magnet cast alnico magnet cast alnico magnet
cast alnico magnet cast alnico magnet cast alnico magnet


Alnico magnets have wide range of working temperatures, up to 550 degree Celsius. They have experienced renewed interest in recent years in such temperature-sensitive applications as hall-effect and MR-based automotive and electronic sensors, in addition to the traditional magnetron, TWT amplifiers, actuators, motors and instruments applications that have long relied upon alnico. Mainly used for a variety of Separators, Sensors, Electron tubes, Traveling wave tubes, Radar, Holding magnets, Clutches and bearings, Motors, Relays, Controls, Generators, Receivers, Telephones, Microphones, Bell ringers, Loudspeakers, Cow magnets, Educational products, military technology and other fields.