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  • Sintered NdFeB Magnet

    Short Description:

    Neodymium magnets (NdFeB) – rare earth permanent magnet composed of neodymium, iron and boron, China began the domestic mining of these in the 1980s. NeFeB magnets are compressed and sintered in a protective atmosphere. If processes are not controlled well, it will lead to quality defect due to corrosion. At SURTIME, we exclude these problems right from the start by carrying quality controls and we consider to be an indispensable part, not only on the end product but also during the critical processes on site.


    Product Detail

    Product Tags

    Sintered NdFeB Magnet Physical Properties
    Grade Remanence Rev. Temp.- Coeff. Of Br Coercive Force Intrinsic Coercive Force Rev. Temp.-    Coeff. Of Hcj Max. Energy Product Max. Operating Temperature Density
    Br (KGs) Hcb (KOe) Hcj (KOe) (BH)max. (MGOe) g/cm³
    N35 11.7-12.2 -0.11~-0.12 ≥10.9 ≥12 -0.58~-0.78 33-36 80℃ 7.6
    N38 12.2-12.5 -0.11~-0.12 ≥11.3 ≥12 -0.58~-0.78 36-39 80℃ 7.6
    N40 12.5-12.8 -0.11~-0.12 ≥11.5 ≥12 -0.58~-0.78 38-41 80℃ 7.6
    N42 12.8-13.2 -0.11~-0.12 ≥11.5 ≥12 -0.58~-0.78 40-43 80℃ 7.6
    N45 13.2-13.8 -0.11~-0.12 ≥11.6 ≥12 -0.58~-0.78 43-46 80℃ 7.6
    N48 13.8-14.2 -0.11~-0.12 ≥11.6 ≥12 -0.58~-0.78 46-49 80℃ 7.6
    N50 14.0-14.5 -0.11~-0.12 ≥10.0 ≥12 -0.58~-0.78 48-51 80℃ 7.6
    N52 14.3-14.8 -0.11~-0.12 ≥10.0 ≥12 -0.58~-0.78 50-53 80℃ 7.6
    N33M 11.3-11.7 -0.11~-0.12 ≥10.5 ≥14 -0.58~-0.72 31-33 100℃ 7.6
    N35M 11.7-12.2 -0.11~-0.12 ≥10.9 ≥14 -0.58~-0.72 33-36 100℃ 7.6
    N38M 12.2-12.5 -0.11~-0.12 ≥11.3 ≥14 -0.58~-0.72 36-39 100℃ 7.6
    N40M 12.5-12.8 -0.11~-0.12 ≥11.6 ≥14 -0.58~-0.72 38-41 100℃ 7.6
    N42M 12.8-13.2 -0.11~-0.12 ≥12.0 ≥14 -0.58~-0.72 40-43 100℃ 7.6
    N45M 13.2-13.8 -0.11~-0.12 ≥12.5 ≥14 -0.58~-0.72 43-46 100℃ 7.6
    N48M 13.6-14.3 -0.11~-0.12 ≥12.9 ≥14 -0.58~-0.72 46-49 100℃ 7.6
    N50M 14.0-14.5 -0.11~-0.12 ≥13.0 ≥14 -0.58~-0.72 48-51 100℃ 7.6
    N35H 11.7-12.2 -0.11~-0.12 ≥10.9 ≥17 -0.58~-0.70 33-36 120℃ 7.6
    N38H 12.2-12.5 -0.11~-0.12 ≥11.3 ≥17 -0.58~-0.70 36-39 120℃ 7.6
    N40H 12.5-12.8 -0.11~-0.12 ≥11.6 ≥17 -0.58~-0.70 38-41 120℃ 7.6
    N42H 12.8-13.2 -0.11~-0.12 ≥12.0 ≥17 -0.58~-0.70 40-43 120℃ 7.6
    N45H 13.2-13.6 -0.11~-0.12 ≥12.1 ≥17 -0.58~-0.70 43-46 120℃ 7.6
    N48H 13.7-14.3 -0.11~-0.12 ≥12.5 ≥17 -0.58~-0.70 46-49 120℃ 7.6
    N35SH 11.7-12.2 -0.11~-0.12 ≥11.0 ≥20 -0.56~-0.70 33-36 150℃ 7.6
    N38SH 12.2-12.5 -0.11~-0.12 ≥11.4 ≥20 -0.56~-0.70 36-39 150℃ 7.6
    N40SH 12.5-12.8 -0.11~-0.12 ≥11.8 ≥20 -0.56~-0.70 38-41 150℃ 7.6
    N42SH 12.8-13.2 -0.11~-0.12 ≥12.4 ≥20 -0.56~-0.70 40-43 150℃ 7.6
    N45SH 13.2-13.8 -0.11~-0.12 ≥12.6 ≥20 -0.56~-0.70 43-46 150℃ 7.6
    N28UH 10.2-10.8 -0.11~-0.12 ≥9.6 ≥25 -0.52~-0.70 26-29 180℃ 7.6
    N30UH 10.8-11.3 -0.11~-0.12 ≥10.2 ≥25 -0.52~-0.70 28-31 180℃ 7.6
    N33UH 11.3-11.7 -0.11~-0.12 ≥10.7 ≥25 -0.52~-0.70 31-34 180℃ 7.6
    N35UH 11.8-12.2 -0.11~-0.12 ≥10.8 ≥25 -0.52~-0.70 33-36 180℃ 7.6
    N38UH 12.2-12.5 -0.11~-0.12 ≥11.0 ≥25 -0.52~-0.70 36-39 180℃ 7.6
    N40UH 12.5-12.8 -0.11~-0.12 ≥11.3 ≥25 -0.52~-0.70 38-41 180℃ 7.6
    N28EH 10.4-10.9 -0.105~-0.120 ≥9.8 ≥30 -0.48~-0.70 26-29 200℃ 7.6
    N30EH 10.8-11.3 -0.105~-0.120 ≥10.2 ≥30 -0.48~-0.70 28-31 200℃ 7.6
    N33EH 11.3-11.7 -0.105~-0.120 ≥10.5 ≥30 -0.48~-0.70 31-34 200℃ 7.6
    N35EH 11.7-12.2 -0.105~-0.120 ≥11.0 ≥30 -0.48~-0.70 33-36 200℃ 7.6
    N38EH 12.2-12.5 -0.105~-0.120 ≥11.3 ≥30 -0.48~-0.70 36-39 200℃ 7.6
    N28AH 10.4-10.9 -0.105~-0.120 ≥9.9 ≥33 -0.45~-0.70 26-29 230℃ 7.6
    N30AH 10.8-11.3 -0.105~-0.120 ≥10.3 ≥33 -0.45~-0.70 28-31 230℃ 7.6
    N33AH 11.3-11.7 -0.105~-0.120 ≥10.6 ≥33 -0.45~-0.70 31-34 230℃ 7.6
     Note:
    · Under working temperature 20℃±2℃, above magnetic parameters and physical properties are tested, with inevitable loss of magnetic force no more than 5%.· The maximum working temperature of magnet is changeable due  to ratio of length and diameter and environment factors.


    Advantage:

    The properties of these magnets are far superior to traditional ones and they are currently the most powerful in application. Their high

    coercivity and high remanence allow the new design and the possibility of increasing magnetic field of application where space is limited

    or where a strong magnetic field required.

    NdFeB magnets are very susceptible to corrosion. Therefore require a protective surface coating. Uses of NdFeB magnet are conditioned

    by the temperature in a wide range running from 80ºC to 230ºC. And also it works at temperature below 0℃.

    Application:
    Neodymium magnets are used as various types of magnetic lenses for focusing, deflection of charged particles in electronics, brake systems,

    drip, sensor, magnetic system in rotor and micro motors, and field of science, medicine (tomography, NMR spectrometers), etc.

     

    Today, NdFeB magnets are used in large quantities all over the world. The development of this material is not yet complete; the remanence

    and coercive field strength are being continually increased. The high energy of NdFeB magnets means that motors and sensors can be built

    ever smaller – and this signifies an increase in performance efficiency. The ongoing improvements enable this interesting material to be conti-

    nually introduced into new areas.

    All stated values were determined using standard samples according IEC 60404-5. The following specifications serve as reference values and

    may differ. For more information please contact our application engineers.

     

     


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