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Disc ferrite magnets – popular magnets
A disc ferrite magnet is used especially in applications where the magnets must be cheap and the size can be large. This is how we ended up using disc ferrite magnets in the popular refrigerator magnets. And everywhere we go and want a memory, we see and buy these magnetic souvenirs.
The ferrite disc magnets are easy to identify by their dark graphite gray color. These ferrite magnets do not rust and do not require any protective coating. In addition, disc ferrite magnets resist demagnetization quite well and can work at high temperatures, up to 250 degrees Celsius.
What ferrite disc magnets can we find at supermagneti.ro?
The range of circular ferrite magnets is very wide, because these magnets were produced on a large scale. In addition, disc ferrite magnets have a lower cost than other types of magnets. From the point of view of dimensions, we can talk about disc ferrite magnets starting from a diameter of 5 mm with an attraction power of 100 grams – HFE-S-05-05 up to disc ferrite magnets with diameters of 100 mm and power of 11 kg – HFE-S-100-15 . The group of magnets also contains cylindrical ferrite magnets, such as HFE- S-10-10.
What popular applications do ferrite magnets have?
Ferrite magnets are widely used in:
- “fridge magnets”, the popular magnetic souvenirs that are placed on the fridge;
- in magnetic toys, for example the carriages of a train that must be easily fixed but the grip must not be too strong;
- for large speakers and quality sound (especially for bass and subwoofers) toroidal magnets or ring ferrite magnets;
- in various magnetic tools, chip and other ferrous waste collectors, welding magnets, magnets for lifting;
- in magnetic transport systems, where large areas under the conveyor belts must be magnetic, but not very strong.
Should I buy a ferrite or neodymium magnet?
This is influenced by how you want to use the magnets. Here are some purchase suggestions:
We especially recommend buying ferita magnets in the following situations:
– Small budget per project
– Use in high temperature conditions (80-250 degrees Celsius)
– Indoor or outdoor use
– Aesthetics less important.
We especially recommend neodymium magnets in the following situations:
– High attraction or repulsion force is required
– Space is limited (miniaturization)
– The final object or project must be lighter
– The finish must be beautiful.
The cost of ferrite, as a material, is much lower than neodymium (Neodymium Iron Boron). On the other hand, a neodymium magnet has an adhesive force that is approximately 4-5 times greater than that of a ferrite magnet. If you calculate the cost per kg of adhesive force, ferrite magnets are approximately 2 to 3 times cheaper than neodymium magnets. This is especially true for block or ring magnets and for larger quantities, with magnets in small quantities things can be different.
Strong ferrite magnets are very large, which makes them dangerous even for children (see safety tips).
All ferrite ring magnets have poles on flat circular surfaces (axial magnetization).
If you want a cheap magnet that can withstand high temperatures, and not very strong, we recommend a classic ferrite magnet!
But if the magnet’s appearance, attractive force and small size are more important, we strongly recommend a disc neodymium magnet or a neodymium cylinder magnet !
