Neodymium magnets (NdFeB)

The name of these magnets comes from the presence of the rare earth element neodymium (Nd) in the alloy.

Among all known ferromagnetic alloys, this one has the highest residual magnetization Br, coercive force Hc and maximum magnetic energy (VN)max. Due to the extremely high magnetic characteristics and relatively low price, these magnets are increasingly used in powerful electric motors and generators, miniature sensors and converters, fastening elements, etc.

Their main disadvantage is the low maximum operating temperature, which for the pure Nd-Fe-B alloy is 80-100°C, but with the help of some additives (mainly cobalt Co) an increase to 200°C is achieved.

ATTENTION!

Neodymium magnets are very hard, relatively brittle and at the same time with a high force of attraction to each other.

Therefore, in order to avoid injuries and accidents when working with large neodymium magnets, please follow the following rules:

Do not let two neodymium magnets fall freely against each other. This will lead to a strong impact and breakage of the magnets.
If possible, work with leather gloves and safety glasses. This will greatly protect your fingers in the event of a “pinching” of two magnets, and in the event of an accidental drop and impact between the magnets, the flying pieces will not get into your eyes;
It is desirable that there are no iron objects on the workbench, as well as cards with magnetic media, electronics and devices sensitive to magnetic fields in the immediate vicinity;
Carefully separate them by sliding them. After separating one magnet, move it away from the other magnets or iron objects;
The magnets should be reattached to each other or to an iron surface very carefully and smoothly by sliding, holding firmly;
If you are temporarily placing them on an iron surface, place a non-magnetic material 3-5 mm thick under them;
The table and graphs below give the magnetic characteristics and demagnetization curves of the neodymium magnets we offer.