Neodymium Magnets：How Strong is it?

What are Neodymium Magnets?

Neodymium magnets, often referred to as NdFeB magnets or neo magnets, are a type of rare-earth magnet known for their remarkable strength and versatile applications. These magnets are composed of a combination of neodymium, iron, and boron elements, which together create a powerful magnetic field. Neodymium magnets belong to the family of permanent magnets, which means they can retain their magnetism for a long time without the need for an external power source.

These magnets are a result of advanced materials science and engineering, and they have revolutionized various industries due to their exceptional properties. Neodymium magnets are characterized by their high magnetic strength, allowing them to attract and hold objects with substantial force. This unique capability has opened up a wide range of applications across sectors such as technology, manufacturing, renewable energy, healthcare, and more.

Know More - Complete Guide: What Are Neodymium Magnets？

How Strong Are Neodymium Magnets?

1) Neodymium magnet strength test

Some scientific experiments demonstrate the strength of neodymium magnets:

•In 1985, scientists successfully levitated a car in the air using neodymium magnets. This experiment proved that neodymium magnets are strong enough to support heavy objects.

• In 2004, scientists successfully built the world's first maglev train using neodymium magnets. The experiment demonstrated that neodymium magnets are strong enough to allow trains to run at high speeds on magnetic tracks.

• In 2010, scientists successfully built the world's first maglev aircraft using neodymium magnets. This experiment proved that neodymium magnets are strong enough to allow aircraft to fly on magnetic tracks.

Actual data on the strength of neodymium magnets:

• The remanence density of neodymium magnets is about 7.4 tesla/m3.

• The magnetization of a neodymium magnet is about 1.06 Tesla.

• The tensile strength of neodymium magnets is about 1500 N/cm2.

These data show that neodymium magnets are among the most powerful magnets in the world. This kind of magnet is called the king of magnets.

2) Factors Affecting Magnetic Strength

There are many factors that affect magnetic strength, including:

• The size of the magnet: The larger the magnet, the stronger the magnetism.

• Magnet shape: The shape of the magnet also affects the strength of the magnet. For example, a round magnet is stronger than a square magnet.

• The material of the magnet: Magnets of different materials have different magnetic strengths. For example, NdFeB magnets are stronger than iron magnets.

• The temperature of the magnet: Temperature also affects the strength of the magnet. For example, ferromagnetic magnets will increase their magnetic force at low temperatures, while NdFeB magnets will weaken their magnetic force at high temperatures.

• The surrounding environment of magnets: The surrounding environment of the magnet also affects the magnetic strength. For example, magnets lose their magnetic force near ferromagnetic materials.

3) Comparison of the strength of neodymium magnets and other magnets

The strength of neodymium magnets offers distinct advantages over the strength of other types of magnets. For example, the magnetic performance of neodymium magnets is 100 times higher than that of ferrite magnets and 5 times higher than that of samarium cobalt magnets. The strength of neodymium magnets makes them widely used in many fields, including hard disk drives, electric vehicles, wind turbines, medical equipment and aerospace, among others.

The following is a comparison table of the strength of neodymium magnets and other types of magnets:

Magnetic Type	Remanence Density (T/m3)	Coercive Force (Oe)	Magnetic Flux Density (MGOe)
Neodymium Magnet	7.4	100000	1000
Ferrite Magnet	0.3	300	30
Samarium Cobalt Magnet	5.9	80000	800

Conclusion

The strength of neodymium magnets makes them widely used in many fields, including hard disk drives, electric vehicles, wind turbines, medical equipment and aerospace, among others. The strength of neodymium magnets also brings some safety hazards. For example, fragments of neodymium magnets may fly away and cause harm to the human body. Therefore, when using neodymium magnets, you need to pay attention to safety.

XHMAG is the world's leading magnet supplier, located in Hefei, Anhui Province, China, and is a leading magnet brand in China. Specializing in the production of high-end NdFeB permanent magnet materials and their products. Provide customers with quality products and services.