What Are Neodymium Magnets Made Of?

Neodymium magnet is also called NdFeB magnet. This kind of magnet is the strongest permanent magnet and the most commonly used rare earth magnet. It is widely used in electronic products, such as hard drives, mobile phones, earphones, and battery-powered tools. But what are neodymium magnets made of? Do you know? In this article, we will take a closer look at what are the components of NdFeB magnets and their proportion. 

As we all know, the third-generation rare-earth NdFeB magnets are extremely powerful magnets among contemporary magnets and are widely used. Its main components are metal neodymium, pure iron, and boron-iron alloy. In order to improve the coercivity, you can add the metal dysprosium (sometimes aluminum, cobalt, praseodymium, dysprosium, terbium, gallium, etc.). The general expression is RE2TM14B (RE=Nd,Pr,Dy TM=Fe,Co).

The Components of NdFeB Magnets and Their Proportion

1. Rare earth metal neodymium accounts for 29%-32.5%;

2. The metallic element iron accounts for 63.95-68.65%;

3. Non-metal element boron accounts for 1.1-1.2%;

4. A small amount of dysprosium that accounts for 0.6-1.2%;

5. Niobium accounts for 0.3-0.5%, and aluminum accounts for 0.3-0.5%;

6. Copper element accounts for 0.05-0.15%;

The quality of the above raw materials will directly affect the magnetic properties of the neodymium-iron-boron permanent magnet. 

Now, many magnet manufacturers now also provide you with NdFeB magnets, but due to their different production capacity and processing methods, the proportion of ingredients is still slightly different.

Conclusion 

Thanks for your reading and we hope it can help you to have a better understanding of the components of NdFeB magnets and their proportion. If you want to learn more about neodymium magnets or other types of magnets, we would like to advise you to visit our website for more information.

If you want to learn more magnet information or prices, welcome contact us. Stanford Magnets is a leading magnet supplier across the world, who has been involved in R&D, manufacturing, and sales of magnets since the 1990s. It provides customers with high-quality permanent magnets like SmCo magnets, neodymium magnets, AlNiCo magnets, and ferrite magnets (ceramic magnets) at a very competitive price.