Ferrite magnets: inexpensive and very robust
Ferrite magnets are the cheapest magnets for simple applications. Compared to neodymium magnets, however, they are also significantly weaker. They can withstand temperatures of up to 250 ° C, are rust-resistant and therefore suitable for outdoor use.
In our range you will find many different sizes, divided into ferrite ring magnets and disc magnets as well as block magnets. Our hard ferrite magnets are ceramic materials and are very hard and brittle. The areas of application cover a wide range of possibilities. Ferrite magnets are used, for example, in the construction of inexpensive refrigerator magnets, but also as school magnets or handicraft magnets and even in loudspeaker construction. So, when you buy a ferrite magnet, you get a real all-round helper.
What exactly are ferrite magnets?
Ferrite magnets are permanent magnets made of the magnetizable material ferrite. They are the most produced type of magnet in the world and are used in many different areas. A general distinction is made between:
- Soft magnetic ferrites
Soft ferrite magnets have a comparatively low coercive field strength. This is the field strength that is necessary to demagnetize ferromagnetic substances.
- Hard magnetic ferrites
Hard ferrite magnets have a high field strength. Correspondingly, they manage to keep their magnetization longer when they encounter an opposing magnetic field.
Ferrite magnets can also consist of barium ferrite (BaFe) or strontium ferrite mixtures (SrFe). Barium ferrite is generally cheaper, but the magnets are less powerful than those made of strontium ferrite. The latter are also suitable for use in conjunction with drinking water. Therefore strontium ferrite is used, among other things, in the sanitary sector.
Are ferrite magnets suitable for outdoors?
Magnets made of ferrite are heat and moisture resistant and do not rust - so you can use them outdoors without any problems. This is what differentiates them, for example, from neodymium magnets, which oxidize very quickly. Ferrite magnets are well suited as magnets for garden gates, for example.
What permanent magnets are there?
Permanent magnets are substances that always have a magnetic force. The three known types of magnets are:
- Ferrite magnets
- Neodymium magnets
- AlNiCo magnets
Ferrite is the weakest magnetic material, but it is very robust. Neodymium magnets, on the other hand, have the greatest magnetic force or adhesive force, but are extremely susceptible to corrosion. AlNiCo magnets are made of various alloys of aluminum, nickel and cobalt. They are extremely heat and corrosion resistant, but only have a low coercive field strength, so they can be demagnetized quickly.