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NdFeB Magnets

① Characteristics

            NdFeB magnets are mainly made from Neodymium, Iron, Boron, with excellent magnetic property, abundant raw material and reasonable prices, NdFeB magnets can be used as an ideal magnets in mini-motor, permanent magnet instrument, electronic industry, auto industry, petro-chemical industry, nuclear magnetic resonance, sound device magnetic suspension system,  magnetic transmission machine and magnetic therapy apparatus etc.. The disadvantage of NdFeB magnets is its weak corrosion and oxidation resistance. its surface usually is treated with some special methods. The surface treatment method  include Zinc, Nickel, Tin, Silver, Gold plating and phosphor and spray epoxy resin etc..

 

Magnetic Properties of Sintered NdFeB

 

Properties

Remanence

Coercive force

Intrinsic coercive

Maximum energy product

Working

 

 

Br

Hcb

Force,Hcj

(BH)max

temp

 

No

Grade

KGs

T

KOe

KA/m

KOe

KA/m

MGOe

KJ/m3

B/レ
0H=-2

 

 

 

Nom.

Min.

Nom.

Min.

Nom.

Min.

Nom.

Min.

Nom.

Min.

Nom.

Min.

∩

 

1

N30

11.2

10.8

1.12

1.08

10.5

10

836

796

>12

>955

30

28

239

223

÷80

 

2

N35

12

11.7

1.2

1.17

11.5

10.8

915

860

>12

>955

35

33

279

263

÷80

 

3

N38

12.6

12.2

1.26

1.22

11.5

11.3

915

900

>12

>955

38

36

303

287

÷80

 

4

N40

12.9

12.6

1.29

1.26

11.6

11.4

924

908

>12

>955

40

38

318

303

÷80

 

5

N42

13.1

12.9

1.31

1.29

11.8

11.5

939

915

>12

>955

42

40

342

326

÷80

 

6

N45

13.6

13.3

1.36

1.33

12

11.6

955

924

>12

>955

45

43

358

342

÷80

 

7

N48

14

13.8

1.4

1.38

10.8

10.2

860

810

>11

>875

48

46

383

367

÷80

 

8

N50

14.3

14.1

1.43

1.41

10.8

10

860

794

>11

>875

50

48

398

383

÷80

 

9

N30M

11.2

10.8

1.12

1.08

10.5

10

836

794

>14

>1114

30

28

239

223

÷100

 

10

N35M

12

11.7

1.2

1.17

11.5

10.9

915

868

>14

>1114

35

33

279

263

÷100

 

11

N38M

12.6

12.2

1.26

1.22

11.8

11.3

939

900

>14

>1114

38

36

303

287

÷100

 

12

N40M

12.9

12.6

1.29

1.26

12

11.6

955

924

>14

>1114

40

38

318

303

÷100

 

13

N42M

13.2

12.9

1.32

1.29

12.4

12

987

955

>14

>1114

42

40

342

326

÷100

 

14

N45M

13.5

13.3

1.35

1.33

12.6

12.2

1003

971

>14

>1114

45

43

358

342

÷100

 

15

N48M

14

13.8

1.4

1.38

13.3

12.9

1059

1027

>14

>1114

48

46

383

367

÷100

 

16

N30H

11.2

10.8

1.12

1.08

10.5

10

836

794

>17

>1353

30

28

239

223

÷120

 

17

N33H

11.7

11.4

1.17

1.14

11

10.5

876

836

>17

>1353

33

31

263

247

÷120

 

18

N35H

12

11.7

1.2

1.17

11.5

10.9

915

868

>17

>1353

35

33

279

263

÷120

 

19

N38H

12.6

12.2

1.26

1.22

11.8

11.3

939

900

>17

>1353

38

36

303

287

÷120

 

20

N40H

12.8

12.6

1.28

1.26

12

11.6

955

924

>17

>1353

40

38

318

303

÷120

 

21

N42H

13

12.8

1.3

1.28

12.4

12

987

955

>17

>1353

42

40

342

326

÷120

 

22

N45H

13.5

13.3

1.35

1.33

12.6

12.2

1003

971

>17

>1353

45

43

358

342

÷120

 

23

N30SH

11.2

10.8

1.12

1.08

10.5

10.1

836

804

>20

>1595

30

28

239

223

÷150

 

24

N33SH

11.7

11.4

1.17

1.14

11

10.6

876

844

>20

>1595

33

31

263

247

÷150

 

25

N35SH

12

11.7

1.2

1.17

11.5

11

915

876

>20

>1595

35

33

279

263

÷150

 

26

N35SH-ケ

12

11.7

1.2

1.17

11.5

11

915

876

>22

>1751

35

33

279

263

÷150

 

27

N37SH

12.3

12

1.23

1.2

11.8

11.3

939

900

>20

>1595

37

35

295

279

÷150

 

28

N38SH

12.5

12.2

1.25

1.22

12

11.4

955

908

>20

>1595

38

36

303

287

÷150

 

29

N40SH

12.7

12.5

1.27

1.25

12.2

11.8

971

939

>20

>1595

40

38

318

303

÷150

 

30

N42SH

13

12.8

1.3

1.28

12.4

12

987

955

>20

>1595

42

40

342

326

÷150

 

31

N45SH

13.5

13.3

1.35

1.33

12.6

12.2

1003

971

>20

>1595

45

43

358

342

÷150

 

32

N25UH

10

9.6

1

0.96

9.6

9.2

764

732

>25

>1990

25

22

199

175

÷180

 

33

N28UH

10.8

10.4

1.08

1.04

10.2

9.8

812

780

>25

>1990

28

26

223

207

÷180

 

34

N30UH

11.2

10.8

1.12

1.08

10.6

10.1

844

804

>25

>1990

30

28

239

223

÷180

 

35

N33UH

11.5

11.3

1.15

1.13

11

10.6

876

844

>25

>1990

33

31

263

247

÷180

 

36

N35UH

11.9

11.7

1.19

1.17

11.5

11

915

876

>25

>1990

35

33

279

263

÷180

 

37

N38UH

12.5

12.2

1.25

1.22

12

11.4

955

908

>25

>1990

38

36

303

287

÷180

 

38

N40UH

12.7

12.5

1.27

1.25

12.2

11.8

971

939

>25

>1990

40

38

318

303

÷180

 

39

N42UH

13

12.8

1.3

1.28

12.4

12

987

955

>25

>1990

42

40

342

326

÷180

 

40

N28EH

10.8

10.4

1.08

1.04

10.4

9.8

811

780

>30

>2388

28

26

223

207

÷200

 

41

N30EH

11.2

10.8

1.12

1.08

10.6

10.1

844

804

>30

>2388

30

28

239

223

÷200

 

42

N33EH

11.5

11.3

1.15

1.13

11

10.6

876

844

>30

>2388

33

31

263

247

÷200

 

43

N35EH

11.9

11.7

1.19

1.17

11.5

11

915

876

>30

>2388

35

33

279

263

÷200

 

44

N28AH

10.8

10.4

1.08

1.04

10.4

9.8

811

780

>35

>2785

28

26

223

207

÷220

 

45

N30AH

11.2

10.8

1.12

1.08

10.6

10.1

844

804

>35

>2785

30

28

239

223

÷220

 

46

N33AH

11.5

11.3

1.15

1.13

11

10.6

876

844

>35

>2785

33

31

263

247

÷220

 

47

N35AH

11.9

11.7

1.19

1.17

11.5

11

915

876

>35

>2785

35

33

279

263

÷220

 

 

 


Magnetic Properties of Bonded NdFeB

 

Material

Br

bHc

iHc

(BH)max

Kurie
Temp.

Max. Working
Temp.

mT

KGs

KA/m

KOe

KA/m

KOe

KJ/m3

MGOe

ìC

ìC

OM-4

350-450

3.5-4.5

239-279

3.0-3.5

640-796

8-10

24-32

3-4

320

120

OM-6

500-600

5.0-6.0

318-358

4.0-4.5

640-796

8-10

40-56

5-7

390

120

OM-8

550-650

5.5-6.5

358-398

4.5-5.0

955-1115

12-14

60-80

5-8.5

470

150

OM-10

650-700

6.5-7.0

398-439

5.0-5.5

640-796

8-10

72-80

9-10

470

150

OM-12

700-800

7.0-8.0

439-478

5.5-6.0

717-876

9-11

80-96

10-12

470

>=80

OM-L

700-800

7.0-8.0

159-199

2.0-2.5

175-239

2.2-3.0

36-52

4.5-6.5

320

>=80

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