NdFeB powder

At present, the product range of our magnets covers five kinds of magnetic powder and all kind of bonded magnet. They can be used in the automobile industry, office automation, electric toys and magnetic curing products, etc. Because they have high quality and high strength and they can be made to complicated shape.

bonded ndfebanisotropic ndfeb powderisotropic ndfeb powder

Magnetic Property of Melt-spun NdFeB Magnetic Powder

Grade Br Hcb Hcj (BH)max Temp. Coeff. Of Br. To 100 Temp. Coeff. Of Hcj. To 100
T KGs KA/m KOe KA/m KOe KJ/m3 MGOe %/°C %/°C
NQP-A 0.74~0.80 7.40~8.00 440~496 5.50~6.20 1035~1360 13.0~17.0 80~96 10.0~12.0 -0.13 -0.40
NQP-B 0.74~0.83 7.40~8.30 320~520 4.00~6.50 560~800 7.0~10.0 64~108 8.0~13.5 -0.105 -0.40
NQP-C 0.74~0.81 7.40~8.10 440~504 5.50~6.30 1035~1360 13.0~17.0 80~96 10.0~12.0 -0.07 -0.40
NQP-D 0.74~0.83 7.40~8.30 440~520 5.50~6.50 640~800 8.0~10.0 92~108 11.5~13.5 -0.07 -0.40
NQP-L 0.85~1.10 8.50~11.0 192~280 2.40~3.50 240~400 3.0~5.0 56~76 7.0~9.5 -0.048 -0.35

Note:

  1. The standard particle size of melt-spun NdFeB permanent magnetic powder:
  2. > 300 µm (60 mesh)   < 1%

    > 150 µm (100 mesh)   20%~40%

    > 75 µm (200 mesh)    50-70%

    > 75 µm (200 mesh)   < 10%

  3. We can manufacture it according to other sizes and magnetic properties required by clients.

Physical Properties:

Grade Curie Temp. Working Temp. (Max) Density Particle Size Click the following link to check the demagnetization curve
°C °C g/cm3 µm
NQP-A 310 120 7.6 50~200 NQP-A demagnetization curve
NQP-B 390 120 7.64 50~200 NQP-B demagnetization curve
NQP-C 470 150 7.64 50~200 NQP-C demagnetization curve
NQP-D 470 150 7.64 50~200 NQP-D demagnetization curve
NQP-L 400 100 7.4 50~200 NQP-L demagnetization curve

We developed new generation of isotropic and anisotropic NdFeB powder based on national equipment assemblies, which are of excellent characteristics, and can reach up to advanced level with international similar products. The granularity of isotropic powder would exceed 200 mesh, which would be suitable for injection moulding magnets without adjusting its granularity further. Because the technical parameters of anisotropic magnets have been accurately controlled by us, we could adjust its intrinsic coercive force between the range of 9KOe and 14KOe in the condition of same max. energy product according to the clients' requirement, this NdFeB powder especially suitable for manufacturing thin-wall magnetic rings with multipoles magnetized. The granularity of anisotropic powder could be adjusted according to clients' requirement to meet the requirement of mould compressing and injection, as well as all kinds of other producing way. According to our previous experience, even sintered magnets manufacturers could use the existing magnetic field oriented compress machine which have slightly modified, to produce the anisotropic bonded magnet.

Sheet 1.Characteristics for isotropic NdFeB magnetic powder

Mark HcJ
(kOe)
Br
(kGs)
(BH)max
(MGOe)
Tc
(°C)
Density
(g/cm3)
Granularity
IQP9-14 9~10 8.6~9.1 14~16 360 7.65 <200
IQP11-12 11~13 7.8~8.2 12~14 310 7.62 <200

Sheet 2. Characteristics for anisotropic NdFeB magnetic powder

Mark HcJ
(kOe)
Br
(kGs)
(BH)max
(MGOe)
AQP9-40 8.5~10 13.0~13.5 40~42
AQP9~40 10.5~12 13.0~13.5 40~42
AQP9~40 12.5~14 13.0~13.5 40~42
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