Ceramic Magnet Strength Rating

Ceramic ferrite magnets are composed of barium or strontium ferrite and the most widely used lowest cost magnet material available today.

Ceramic magnet strength rating.

It depends on the size shape and grade of the magnet where the measurement is performed and the presence of any other magnets or ferromagnetic materials nearby. If a magnet has a grade of n 42 it has a maximum energy product of 42 mgoe. Ceramic magnets also known as ferrite magnets are part of the permanent magnet family and the lowest cost hard magnets available today. In general the number indicates the strength of the magnet measured in megagauss oersted mgoe.

Composed of strontium carbonate and iron oxide ceramic ferrite magnets are medium in magnetic strength and can be used at fairly high temperatures. Bhmax mgoe maximum energy product measured in mega gauss oersteds this is a direct measurement of a materials maximum magnetic strength after the magnet is fully saturated charged by an external magnetic field. As with all magnet alloys ceramic magnets should not be used as structural elements. Relatively high in magnetic strength and exhibiting good resistance to demagnetization ceramic magnets are popular for many consumer applications.

Often sacrificing space and using more ceramic ferrite magnet alloy is a very good trade off for the low cost. Ceramic magnets have the lowest energy density of the commercially viable alloys but are by far the most cost effective. For example an n 42 magnet is about 2 stronger than an n 40 magnet. Neodymium magnets will lose about 1 of their magnetic strength every 10 years due to self demagnetization.

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