N55: King of the Permanent NdFeB Magnet

The theoretical (BH)max value of N55 NdFeB magnet is 512kJ/m3(64MGOe), and most of magnet manufacturer can make N52 magnet now. The (BH)max of N52 already achieved 90% of theoretical limit. The question in the mind of many users – is there any grade stronger than N52 magnet? N55 is the most powerful grade available currently for commercial use.

N55 King of the Permanent NdFeB Magnet

N55 King of the Permanent NdFeB Magnet

How to get make N55 magnet

Scientific composition designs will ensure the NdFeB magnet have desirable saturation magnetization. It is important to avoid the elements use which affects the saturation magnetization of Nd2Fe14B main phase.
Decrease the non-magnetic phaseto raise the volume ratio of Nd2Fe14B main phase. The Nd-rich phase needs more rational proportion and distribution. The α-Fe, oxide and carbide from production process will also avoid the magnetic properties of magnet.
Enhance the orientation degree of Nd2Fe14B main phase.
The ideal micro structural will improve the ratio of positive domain.
Enhance the magnet’s density.

How much stronger is N55 neodymium magnet than N52?

N55 magnet is the strongest commercial magnet at present. The strength of rare earth neodymium magnet is measured in the range of 24 mgoe-55 mgoe. This grand of neodymium magnet is 5-6% stronger than N52.

How high is the temperature resistance of N55 NdFeB magnets?

In order to ensure the ideal saturation magnetization of N55 magnet, the manufacturer will no longer use heavy rare earth and other metal elements to improve the coercivity of the magnet. The maximum working temperature of N55 magnet is only about 60 degrees Celsius.

Demagnetization curve of N55 permanent magnet

The demagnetization curve of N55 magnets

Therefore, these magnets are used in specific applications requiring maximum magnetic strength in a small space. Due to its strong magnetic field, N55 grade is ideal for fine and delicate work were small size really matters. It is truly a super strong magnet. For example, HSMAG engineering team used these high power magnets for a newly developed magnetic bearing prototype. HSMAG uses finite element analysis to ensure maximum efficiency and power.

The NdFeb magnets are used in various industries. Medicine, Biotechnology, Electronic, Auto, Military, Space and many more. Because of their unique strength in relation to their size makes them a blessed alternative to commonly larger Ferrite magnets. N55 magnets use has made for a drastic change in the way the global industry market perceives magnet functionality and size. Thus, the magnet offers the best size to magnetic power ratio. As a result of their magnetic force, strong magnets are ideal for holding applications.

HSMAG proudly produces and supplies these magnets for a wide range of applications. Please contact us for more information.

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