What is the difference between NdFeB and ferrite?

- Sep 25, 2018 -

The advantages of NdFeB are high cost performance and good mechanical properties. The insufficient ferrite is located at a low Curie temperature point, has poor temperature characteristics, and is prone to chalking corrosion. It must be adjusted by chemical composition and surface treatment. It can be improved to meet the requirements of practical applications.

Ferrite is a metal oxide with ferromagnetism. In terms of electrical properties, the resistivity of ferrite is much larger than that of metal and alloy magnetic materials, and the NdFeB magnet has higher dielectric properties. The magnetic properties of ferrite also exhibit high magnetic permeability at high frequencies. Therefore, ferrite has become a non-metallic magnetic material widely used in the field of high frequency and low voltage.

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NdFeB is a third-generation rare earth permanent magnet material. It has the characteristics of small volume, light weight and strong magnetic properties. It is the best magnet before the performance of magnetic materials. It is known as the magnetic king in the magnetic field. The advantages of high energy density make NdFeB permanent magnet materials widely used in modern industrial and electronic technology. In the bare magnetic state, the magnetic force can reach about 3500 Gauss. Ferrite, also known as iron oxide or magnetic porcelain, is a non-metallic magnetic material and is a composite oxide (or orthoferrate) of magnetic ferric oxide and one or more other metal oxides. The magnetic force is usually 800-1000 Gauss, which is often used in speakers, speakers and other instruments.


The main differences between NdFeB magnets and ferrite magnets are as follows:


1. Ferrite magnets are not as good as NdFeB.


2. Price. Ferrite is much cheaper than NdFeB magnets.


3. NdFeB magnets are very resistant to temperature, while ordinary NdFeB is usually only 80 degrees. Exceeding this working temperature, demagnetization will occur.


4. Ferrite stability is very good, it is oxide itself, very stable, NdFeB is an alloy, and it is easy to oxidize and must be coated.


  • Electric Lifting Magnet
  • AlNiCO Magnets
  • Ferrite Ceramic Magnet
  • Sintered NdFeB Magnetization
  • Marine Grade Speakers
  • Waterproof Marine Speaker

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