Neodymium-Iron-Boron (NdFeB) Magnets

Neodymium-iron-boron (NdFeB) is commonly called neodymium. It is often described as a ‘rare-earth magnet’ and is known to be the strongest and most powerful magnetic material. It as a maximum energy product of 52 MGOe and was discovered in 1980. The processes that relate to the performance of NdFeB have been systematically improved, resulting in an ever higher maximum energy product. Magnetic specialist, Goudsmit, sells neodymium-iron-boron (NdFeB) magnets under the brand name Neoflux®.

Today NdFeB is the most popular and commonly used magnetic alloy. It should be known that the disadvantages of NdFeB are the low temperature-resistance, the mechanical brittleness and the fact that the material is subject to corrosion,. This means that it can’t be used for certain applications.

Despite this, NdFeB offers the highest available magnetic energy density. It has a BHmax value of 33 to 52 MGOe. Therefore, far less magnetic material is needed compared to other magnetic alloys. This explains the huge popularity.

NdFeB powder is extremely fine and in the dry state can ignite spontaneously. For safety, it is important to be extra careful and take precautions when handling NdFeB powder.


Neodymium magnets, with their high strength and performance, are used in many applications. Some of these applications include;

  • Motors
  • Wind turbines
  • Spindle drives of hard disks
  • Speakers
  • MRI scanners
  • Magnetic separators
  • Electronics
  • Cars
  • Often in combination with sensors.

Product Design

The excellent performance of this material has made it invaluable in the industry. The strength/weight ratio allows it to be used in ways that were previously inconceivable. This allows present-day engineers to create revolutionary new designs.

Goudsmit Magnetics provides a full range of neodymium magnets with various strengths. They also make magnet assemblies that fully meet specific requirements.

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