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Alnico Magnets

Alnico Magnets were one of the first magnets available on the market. They are one of the weakest of permanent magnets and have a magnetic field that is easily prone to demagnetisation. However Alnico magnets are still highly valued in some industries due to their excellent temperature stability. In many industrial settings, Alnico block magnets have been replaced by stronger Neodymium (Rare Earth) magnets but Alnico magnets are still used for high-temperature applications. Their excellent temperature stability and very good corrosion resistance makes them the preferred magnet in these settings. Their mechanical strength is greater than both Ferrite and Rare Earth magnets.

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Alnico Magnets

Alnico Magnets

AMF Magnets prides itself on an extensive range of magnets, allowing our customers to find the perfect magnet for their application. Although Alnico magnets have been superseded in many fields, we still ensure we keep stock of these permanent magnets to ensure they are available to our customers. AMF is your one stop shop for all your magnets needs. If you need any assistance in choosing the right magnet for you please check out our Knowledge Base articles or contact our friendly sales team.

Alnico magnets first became available on the market in the 1930s. Alnico or Al-NI-CO magnets are a magnet made as an alloy of Aluminium (Al), Nickel (Ni) and Cobalt (Co). The introduction of Alnico magnets to the market allowed for expensive electromagnets to be replaced in many situations such as speakers and motors. Although there are several other, stronger forms of magnet now available, Alnico rod magnets and Alnico block magnets are still popular with many of our customers.

Uses for Alnico Magnets:

Alnico Block magnets and Horseshoe Magnets are often used by teachers and education facilities for experiments that demonstrate magnetic fields and properties. Both the Alnico Blocks and the Alnico Horseshoe magnets are marked with North and South poles. They are the ideal magnet for the school setting as they are large enough to be easily handled yet unlike Neodymium magnets they are not too powerful. Although large in scale their comparably low magnetic strength means children can handle these magnets in a supervised classroom setting without risk of harm.
Alnico Cylinders are popularly used by guitarists as guitar pickups. Fender have been using Alnico cylinders in their guitar pick ups since the 1940s. If you require Magnets for manufacturing purposes, Alnico Pot Magnets are great for holding applications, jigs and fixtures.

Alnico magnets properties:

Alnico magnets are produced by the casting or powder metallurgical techniques and are known by the chemical composition Al-Ni-Fe-Co. Unlike Neodymium magnets which are available in a variety of grades all our Alnico magnets are C5 grade. Alnico magnets are very hard and brittle in nature and provide poor resistance to demagnetisation. They are able to produce good flux density at a reasonable cost in comparison to other magnet varieties. They also boast excellent stability over a wide temperature range.

If you require further information about our Alnico Magnets please contact the AMF Magnetics sales team.


What is an alnico magnet?

Alnico magnets consist of an alloy of Aluminium (Al), Nickel (Ni) and Cobalt (Co). They are brittle in nature and have excellent stability in high temperature environments. They were first invented and introduced to the market in the 1920 and 30s. For more information please check out our Technical Specifications pages.

Are Alnico magnets used for guitar pickups?

Yes, Fender have been using Alnico rod magnets in the construction of their guitar pick-ups since the 1940s and they are still an essential part of guitar pick-ups to this day.

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The Pull Force listed for each magnet is based on lifting 10mm thick steel from a horizontal surface. Magnets on a vertical surface (of 10mm thick steel) are generally able to hold around only 30% of the pull force listed in the product description. This is due to the effects of gravity and the lack of friction between the surface and the shiny magnet. Read More