DongGuan Courage Magnetoelectric Technology Co.,Ltd

Magnet FAQ

What are the components of neodymium magnets? What is the proportion?

NdFeB permanent magnet material is a permanent magnet material based on intermetallic compound ND2FE14B. The main components are rare earth (ND), iron (FE), boron (B). In order to obtain different properties, the rare earth ND can be replaced by some other rare earth metals such as dysprosium (Dy), praseodymium (Pr), iron can also be replaced by other metals such as cobalt (Co), aluminum (Al), etc. The content of boron is small, but it plays an important role in the formation of intermetallic compounds with tetragonal crystal structure, making the compounds have high saturated magnetism. High uniaxial anisotropy and Curie temperature.

The proportion of main elements in Nd-Fe-B

Main Elements within NdFeB Percentage by weight
Neodymium (Nd) 29%-32.5%
Iron (Fe) 63.95-68.65%
Boron (B) 1.1-1.2%
Aluminium (Al) 0.3-0.5%
Niobium (Nb) 0.5% -1%
Dysprosium (Dy) 0.6-1.2%

The quality of these raw materials is directly related to the magnetic properties of Nd-Fe-B permanent magnet.

Now there are many magnet manufacturers to provide us with magnets, but due to different production capacity and processing methods, the proportion of ingredients is still slightly different.

Related magnet composition proportion articles;
Introduction of main components and proportion of permanent ferrite magnets


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