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NdFeB Magnets

  Bonded NdFeB magnets are produced by binding rapid-quenching Nd-Fe-B powders which is mixed with plastic resin to form a magnet by compression molding with epoxy and injection molding with nylon. The ...

      Bonded NdFeB magnets are produced by binding rapid-quenching Nd-Fe-B powders which is mixed with plastic resin to form a magnet by compression molding with epoxy and injection molding with nylon. The injection molding has particularly useful feature in molding very complicated shapes and thin walled parts. The compression molded magnets are limited for simple geometries, but they can offer higher magnetic strength than injection molded magnets because of relative high density. Bonded NdFeB have lower energy properties compared with sintered NdFeB. However, it can be produced with high dimension accuracy and shape complexity. Normally, there is no finishing required for bonded NdFeB. In order to prevent corrosion, the magnet surfaces are treated by epoxy coating or nickel plating.

    Typical Magnetic Performance Range for Bonded NdFeB Magnets

    Grade

     

    Br

    Hcb

    Hcj

    BHmax

    Density

    Tw Max

    kGs

    mT

    kOe

    kA/m

    kOe

    kA/m

    KJ/m3

    MGOe

    g/cm3

    BN-2

    3.50

    350

    2.5

    200

    7.0

    560

    20

    2.5

    4.8

    160

    BN-4

    4.50

    450

    3.5

    280

    8.0

    640

    40

    5.0

    5.5

    160

    BN-6

    5.50

    550

    4.5

    360

    8.0

    640

    52

    6.5

    5.8

    160

    BN-8

    6.50

    650

    5.0

    400

    9.0

    720

    64

    8.0

    6.0

    160

    BN-8H

    6.30

    630

    5.5

    440

    15.0

    560

    64

    8.0

    6.0

    160

    BN-8SR

    6.30

    630

    5.5

    440

    12.0

    560

    64

    8.0

    6.0

    180

    BN-8L

    6.50

    650

    5.5

    440

    9.0

    560

    68

    8.5

    6.0

    160

    BN-10

    7.00

    700

    5.5

    440

    9.0

    560

    80

    10.0

    6.0

    160

    BN-10H

    7.30

    730

    5.5

    440

    9.0

    560

    84

    10.5

    6.2

    160

    BN-12

    7.50

    750

    6.0

    480

    10.0

    560

    92

    11.5

    6.2

    160

    BN-12D

    7.50

    750

    6.0

    480

    10.0

    560

    92

    11.5

    6.2

    170

    BN-12L

    7.80

    780

    5.5

    440

    7.0

    560

    92

    11.5

    6.2

    150

    BN-13L

    8.00

    800

    5.5

    440

    7.0

    560

    96

    12.0

    6.3

    150

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