Permanent Magnet NdFeB

   Rare-earth permanent magnet NdFeB is developed in the 1980's with excellent magnetic characteristics in the terms of high energy product, high coercive force etc. It is the most strong and powerful magnetic material up to now and regarded as the "King of Magnet".

   With its excellent magnetic characteristics, abundant raw material and relatively low prices, NdFeB is under a very fast development and wide application. It is getting to replace the traditional magnet of Ferrite, Al-Ni-Co and Sm-Co in many field such as electro-acoustic device, electrical motor, instrument and meter, auto industry, petrochemical industry and magnetic health-care product.

   The basic and typical shape of the magnet used are disc, ring, tile and block (square). The surface is usually treated with Nickel, Zinc or epoxy resin coating.

Specifications:

Grade

Remanence

Br

Coercive Force

Hcb

Inside Coercive Force

Hcj

 Max. Energy Product

(BH)max

Tm. 

kGs

T

kOe

KA/m

KOe

KA/m

MGOe

KJ/M3

oC

Std.

Min.

Std.

Min.

Std.

Min.

Std.

Min.

Std.

Min.

Std.

Min.

N 38

12.75

12.35

1.275

1.235

11.5

10.8

915

860

12.5

995

38.8

36.8

309

293

80

N40

13.15

12.75

1.315

1.275

11.0

10.25

876

836

12.5

995

41.0

38.8

326

309

80

N43

13.50

13.15

1.350

1.315

11.0

10.5

876

836

12.5

995

43.8

41.0

349

326

80

N35H

12.35

11.75

1.235

1.175

11.5

10.8

915

860

17.5

1393

36.8

33.8

293

269

120

N38H

12.75

12.35

1.275

1.235

12.0

11.5

955

915

17.5

1393

38.8

36.8

309

293

120

N40H

13.15

12.75

1.315

1.275

12.0

11.5

955

915

17.5

1393

41.0

38.8

326

309

120

N35SH

12.35

11.75

1.235

1.175

11.5

10.8

915

860

20.5

1632

36.8

33.8

293

269

150

N38SH

12.75

12.35

1.275

1.235

11.5

10.8

915

860

20.5

1632

38.8

36.8

309

293

150
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