0769-23388351
Toggle Navigation
What is the maximum working temperature of NdFeB(neodymium) magnets? What happens if the magnet exceeds this temperature? What does the Curie temperature of NdFeB magnets mean? In this article, we'll try to simplify some of these concepts and answer some common questions.
Definition
Curie temperature is the temperature at which all magnetization of a magnet disappears.
The maximum operating temperature refers to the number at which each different grade of magnet material works.
While not very accurate, it is a good guideline and applies in many situations.
Between the maximum operating temperature and the Curie temperature, some percentage of the magnetization is irreversibly lost.
Some basic knowledge;
NdFeB magnets are classified into N, NM, NH, NSH, NUH, NEH grades of magnets according to different working temperatures.
For these grades, you can check some information on NdFeB permanent magnets.
See also, the introduction of magnet grades/magnet grades.
The figure below lists the maximum working temperature and its Curie temperature of different grades of NdFeB magnets.
Maximum working temperature and Curie temperature of different grades of NdFeB magnets
Conclusion；
The working temperature of the N gear is 80°C, which means that when the NdFeB magnet product reaches the working temperature of 80°C, it will start to demagnetize and the magnetic properties will be lost. When the temperature is getting higher and higher, when the temperature reaches 310 ℃, the NdFeB magnet will completely lose its magnetic properties. This 310℃ is the Curie temperature of N-grade NdFeB magnets.
Magnets of NM, NH, NSH, NUH, NEH grades correspond to the corresponding temperature coefficients according to the figure.
We recommend related neodymium magnet products for you;
This is a very small rectangular ferrite block magnet, measuring 2.45 mm in length and 1 mm in both width and height. It is magnetised along its length and is barely noticeable when held in the hand....
7.4x6x5mm Ferrite Small Block Magnet Introduction，Material: Hard Ferrite (Ceramic)，Shape: Block / Rectangle / Bar，Coating: No Coating，Grade (Chinese Stardard): Y30，Operating temperature: -40°C to 250°C，Delivery time: 7-15 days，Magnetization direction: thickness....
U-shaped neodymium magnets are a type of high-performance permanent magnet material with a structure resembling the letter ‘U’. Manufactured from sintered neodymium-iron-boron, they are characterised by high magnetic energy product....
This is a radial 4-pole ring (Hollow cylinder) magnet, the material is bonded NdFeB, with high magnetic performance, the size is 16mm outer diameter, inner hole 5mm, height 20mm, surface gray epoxy treatment, suitable for water pump motor...
This product is a 4-pole ring magnet, injection-molded ferrite material, the sample size is 22mm outer diameter, 7mm inner diameter, 4mm thickness, 2 N poles and 2 S poles, mainly used for push rod motors, magnetic induction devices, encoders, etc.,...
This is a radial 2 pole circular magnet designed specifically for magnetic encoder chips. It is made of sintered neodymium-iron-boron with N35 grade performance and is suitable for standard environments....
This product is a multi pole magnetic ring with an inner diameter of 1.5mm. The material is injection molded ferrite. It adopts axial multi pole magnetization and is mainly used for DC motors. If you have a sample of similar injection molded magnetic products, please contact us for quotation....
This is a very small size rectangular block magnet with galvanized surface, 3mm length, 1.5mm width and height, with very fine tolerance, magnetized by lengthwise direction, mainly used in precision electronics, instrumentation, please contact us if you need to buy....