Neodymium disc magnet, 2mm x 2mm, N48

A neodymium magnet is a ferromagnetic material. In terms of magnetic properties, it belongs to the most stable magnet types. The neodymium magnet alloy consists of microcrystalline grains, which are placed in a strong magnetic field during production, so that their magnetic axes point in the same direction. In terms of its magnetic values, it significantly exceeds the values of traditional strontium ferrite (by 18 times the value) as well as the first generation of the first rare earth magnet, Samarium-cobalt magnets.

Designation of the type ( N ). The magnet type has a high tendency to corrosion, so it comes off the production line with surface protection. Higher values indicate stronger magnets (eg: N48). There is a widely known international classification for sintered NdFeB magnets. Their values range from 35 to 52. The first letter N before the values stands for neodymium, i.e. sintered NdFeB magnets, e.g. N52.

The forces inherent in rare earth magnets can carry great dangers. Neodymium magnets larger than a few cubic centimeters are strong enough to cause injury to body parts caught between two magnets, even bone fractures. Ingestion of magnets can cause death, if this happens, a doctor must be consulted immediately.

The values in "Technical data" are informative.