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Contact us
Mag-Magnet Technology Co., ltd
Address: Room 508 A Area Huafeng Technopark Xinhu Road Baoan Shenzhen 518100 China
Tel: 0086-755-33231556; 0086-755-29418482
Fax:0086-755-29789965
Email: info@mag-magnet.com
www.mag-magnet.com
Skype: walterxia
MSN: magmagnetsz@hotmail.com
 
 
NdFeB Magnet
     
Disk-NdFeB Ring-NdFeB Segment-NdFeB
Heteromorphism NdFeB Block-NdFeB Cylinder with hole NdFeB

Neodymium (NdFeB) magnet is mainly made of Nd2Fe14B by powder metallurgical method, it has good machine-ability property, its shape has disk, ring, block, segment and heteromorphism. Now develop new product can work well at temperature up to 250≧. Since Neodymium magnet (NdFeB)¨ poor corrosion resistance, normal it is plated, such as Zn, Ni, Double Ni, NiCuNi, Epoxy, Au, etc. Neodymium (NdFeB) Magnet has highest cost performance.

Application Coating Magnetization Direction Grade Physical Characteristics Production
Flow
Tolerance

Application
Magnetic Separator         DC Motor          Servo Motor
Microphone & Speaker        Computer & Car       Daily products
Sensor & Watch           MRI

Coatings: Zn, Color Zn, Ni, Double Ni, NiCuNi, Zn-Ni alloy, Ag, Au, Cr, Epoxy, and Passivation.
Properties of the Coatings (Sample Dia12x1.5mm)

Coating Type

Coating Thickness

Corrosion-
Resistant in Salt Fog (Hr)

Coating Porosity

Magnetic Flux Lose

Color

PCT(Hr)

Zn

12-15

>24

<0.1

<0.2%

white

>16

Color-Zn

12-15

60

<0.1

<0.1%

color

>24

Ni

12-18

24

<0.2

<0.3%

silver

>16

Double-Ni

16-20

36

<0.1

<0.3%

silver

>24

NiCuNi

16-30

60

<0.1

<0.1%

silver

>30

Zn-Ni

10-20

600

<0.1

<0.1%

color

>90

Epoxy

20-50

240

-

-

black

>24

Passivation

1-4

8

-

-

-

5

Au

8-12

24

<0.1

<0.2%

golden

16

 

Grade

Remanence

Coercive

Maximum Energy Product

Max Working Temp

Br

Hcb

Hcj

(BH) max

 

KGS

T

KOe

KA/m

KOe

KA/m

MGOe

KJ/m3

Nom

Min

Nom

Min

Nom

Min

Nom

Min

Min

Min

Nom

Min

Nom

Min

Max Working Temp

N35

12.1

11.8

1.21

1.18

11.4

11

907

876

12

955

35

33

279

263

80

N38

12.6

12.3

1.26

1.23

11.7

11.4

931

907

12

955

38

36

302

287

80

N40

12.9

12.6

1.29

1.26

11.9

11.6

947

923

12

955

40

38

318

302

80

N42

13.3

13

1.33

1.3

12.3

11.9

979

947

12

955

42

40

334

318

80

N45

13.6

13.3

1.36

1.33

12.1

11.8

963

939

12

955

45

43

358

342

80

N48

14

13.5

1.4

1.35

12.1

11.8

963

939

12

955

48

46

382

366

80

N50

14.3

14.0

1.43

1.40

12.3

11.6

979

923

12

955

50

48

398

382

80

38M

12.6

12.3

1.26

1.23

12.2

11.7

971

931

14

1114

38

36

302

287

100

40M

12.9

12.6

1.29

1.26

12.3

11.8

979

939

14

1114

40

38

318

302

100

42M

13.3

13

1.33

1.3

12.4

12

987

955

14

1114

42

40

334

318

100

45M

13.6

13.3

1.36

1.33

12.1

11.8

963

939

14

1114

45

43

358

342

100

48M

13.9

13.6

1.39

1.36

12.9

12.3

1027

979

14

1114

50

48

398

382

100

30H

11.2

10.8

1.12

1.08

10.7

10.2

852

812

17

1353

30

28

239

223

120

35H

12.1

11.8

1.21

1.18

11.6

11.1

923

884

17

1353

35

33

279

263

120

38H

12.6

12.3

1.26

1.23

12.1

11.7

963

931

17

1353

38

36

302

287

120

40H

13

12.6

1.3

1.26

12.0

11.5

955

915

17

1353

40

38

318

302

120

42H

13.1

12.8

1.31

1.28

12.0

11.5

955

915

17

1353

42

40

334

318

120

44H

13.5

13.2

1.35

1.32

12.0

11.5

955

915

17

1353

45

42

358

334

120

46H

13.7

13.4

1.37

1.34

13.0

12.6

1035

1003

17

1353

46

44

366

350

120

30SH

11.2

10.8

1.12

1.08

10.7

10.2

852

812

20

1592

30

28

239

223

150

35SH

12

11.7

1.2

1.17

11.6

11.1

923

884

20

1592

35

33

279

263

150

38SH

12.6

12.3

1.26

1.23

12.1

11.7

963

931

20

1592

38

36

302

287

150

40SH

13.0

12.6

1.30

1.26

12.3

12.0

979

955

20

1592

40

38

318

302

150

42SH

13.1

12.8

1.31

1.28

12.4

12.1

987

963

20

1592

42

40

334

318

150

44SH

13.5

13.2

1.35

1.32

12.8

12.4

1019

987

20

1592

44

42

350

334

150

28UH

10.9

10.5

1.09

1.05

10.4

10

828

796

25

1990

28

26

223

207

180

30UH

11.2

10.8

1.12

1.08

10.3

10

820

796

25

1990

30

28

239

223

180

33UH

11.5

11.1

1.15

1.11

10.8

10.5

860

836

25

1990

33

31

263

247

180

35UH

12.0

11.7

1.20

1.17

11.6

11.1

923

884

25

1990

35

33

279

263

180

38UH

12.6

12.3

1.26

1.23

12.1

11.7

963

931

25

1990

38

36

302

287

180

40UH

13.0

12.6

1.30

1.26

12.3

12.0

979

955

25

1990

40

38

318

302

180

42UH

13.1

12.8

1.31

1.28

12.4

12.1

987

963

25

1990

42

40

334

318

180

30EH

11.2

10.8

1.12

1.08

10.3

10.0

820

796

30

2388

30

28

239

223

200

33EH

11.5

11.1

1.15

1.11

10.8

10.5

860

836

30

2388

33

31

263

247

200

35EH

12.0

11.7

1.20

1.17

11.6

11.1

923

884

30

2388

35

33

279

263

200

 

Physical and Manufacturing Characteristics

Characteristics

Symbol

Unit

Data

Density

D

G/cm3

7.40-7.60

Vickers Hardness

Hv

D.P.N

550-650

Compression Strength

C.S

N.mm2

600-780

Electrical Resistivity

Ω.cm *10000

--

1.8!2.0

Recoil Permeability

μrec

--

1.05

Temp. Coefficient of Br

%/≧

 

-0.12~~-0.11

Temp Coefficient of Hcj

%/≧

 

-0.7~~-0.5

 

Tolerance:
Shape: Disk, Ring, Block, Segment, Heteromorphism. OD, ID, L, W, T stands for outer diameter, inner diameter, length, width

Dimension Range

OD

ID

L

W

T

Planar

Parallel

Perpendicular

Columnar

Concentricity

S+5

+/-0.03

+/-0.03

+/-0.04

+/-0.04

+/-0.04

0.02

0.03

0.03

0.02

0.04

5<S+10

+/-0.04

+/-0.04

+/-0.04

+/-0.04

+/-0.04

0.02

0.04

0.05

0.02

0.05

10<S+20

+/-0.05

+/-0.05

+/-0.05

+/-0.05

+/-0.05

0.03

0.05

0.08

0.03

0.10

20<S+30

+/-0.05

+/-0.06

+/-0.06

+/-0.06

+/-0.05

0.04

0.05

0.10

0.03

0.15

30<S+40

+/-0.06

+/-0.07

+/-0.06

+/-0.06

+/-0.06

0.05

0.08

0.20

0.04

0.20

40<S+50

+/-0.10

+/-0.10

+/-0.10

+/-0.10

+/-0.08

0.05

0.10

0.25

0.05

0.20

S>50

+/-0.10

+/-0.10

+/-0.10

+/-0.10

+/-0.10

0.06

0.10

0.30

0.06

0.20

and thickness. All the units in mm, S stands for size.
 

堊巷芦利姥 44030602001123催

堊ICP姥17140009催-1