Typical Magnetic Properties of Bonded NdFeB Magnets

 

Grade

Residual Induction(Br):      mT(KGs)

Coercive Force(Hcb): KA/m(KOe)

Intrinsic Coercive Force(Hcj):  KA/m(KOe)

Max. Energy Product(BH)max:         KJ/m3(MGOe)

Density(D):  g/cm3

Max. Operating Temp. (Tw):    °C

Temp. Coefficient of Br: %/°C

BN-4

400-490

(4.0-4.9)

256-336

(3.2-4.2)

640-800

(8-10)

24-40

(3-5)

5.5-6.0

120

-0.13

BN-5

420-540

(4.2-5.4)

275-368

(3.4-4.6)

640-800

(8-10)

32-48

(4-6)

5.5-6.0

120

-0.13

BN-7

520-620

(5.2-6.2)

336-416

(4.2-5.2)

640-800

(8-10)

48-64

(6-8)

5.8-6.3

120

-0.13

BN-9

620-700

(6.2-7.0)

400-456

(5.0-5.7)

640-800

(8-10)

64-80

(8-10)

5.8-6.3

120

-0.13

BN-10

670-740

(6.7-7.4)

424-472

(5.3-5.9)

520-640

(6.5-8.0)

72-88

(9-11)

6.0-6.5

120

-0.13

BN-11

680-750

(6.8-7.5)

472-512

(5.9-6.4)

720-840

(9-10.5)

80-96

(10-12)

6.0-6.5

120

-0.13

BN-5H

420-520

(4.2-5.2)

280-376

(3.5-4.7)

1120-1360

(14-17)

32-48

(4-6)

5.5-6.0

150

-0.11

BN-7H

520-600

(5.2-6.0)

368-432

(4.6-5.4)

1120-1360

(14-17)

48-64

(6-8)

5.8-6.3

150

-0.11

BN-9H

600-660

(6.0-6.6)

432-488

(5.4-6.1)

1120-1360

(14-17)

64-80

(8-10)

6.0-6.5

150

-0.11

Remarks:
The above-mentioned data are given at room temperature.
The Max. operating temperature will vary with L/D (Length to Diameter ratio), coating and environmental factors.
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