neodymium iron boron magnets Sintered NdFeB
Sintered NdFeB
Product Details

  Neodymium Iron Boron (NdFeB) magnets, of the Rare Earth class, have been commercially available since the mid -1980's. Their popularity has grown rapidly due to their high Maximum Energy Product and their wide range of available shapes, sizes, and grades. 

  NdFeB magnets can be manufactured by sintering, compression bonding, injection molding, and extrusion. The sintered form holds the highest energy product of up to 48MGOe, while the bonded form holds a lower energy product of up to 10MGOe. The majority of NdFeB magnets are anisotropic and can only be magnetized in the orientation direction. In general, magnetizing fields of approximately 30KOe are required to saturate NdFeB magnets.

  These magnets are prone to corrosion in humid environments. For this, liquid epoxy, dry epoxy, nickel plating, zinc plating, and combinations of these coatings may be used as a protective measure. 

Surface Treatment Method:

  Zinc,Nickel,Tin,Phosphor,Silver or Gold Plating Spray Coating Epoxy Resin.

  Typical Magnetic Performance Range for Sintered NdFeB Magnet

Grade

Br

Hcb

Hcj

BHmax

Density

Tw Max

kGs

mT

kOe

kA/m

kOe

kA/m

KJ/m3

MGOe

g/cm3

N27

10.3-10.8

1030-1080

≥10.0

≥796

≥12

≥955

199-231

25-29

7.5

80

N30

10.8-11.3

1080-1130

≥10.0

≥796

≥12

≥955

223-247

28-31

7.5

80

N33

11.3-11.7

1130-1170

≥10.5

≥836

≥12

≥955

247-271

31-34

7.5

80

N35

11.7-12.2

1170-1220

≥10.9

≥868

≥12

≥955

263-287

33-36

7.5

80

N38

12.2-12.5

1220-1250

≥11.3

≥899

≥12

≥955

287-310

36-39

7.5

80

N40

12.5-12.8

1250-1280

≥11.4

≥907

≥12

≥955

302-326

38-41

7.5

80

N42

12.8-13.2

1280-1320

≥11.5

≥915

≥12

≥955

318-342

40-43

7.5

80

N45

13.2-13.8

1320-1380

≥11.6

≥923

≥12

≥ 955

342-366

43-46

7.5

80

N48

13.8-14.2

1380-1420

≥11.6

≥923

≥12

≥876

366-390

46-49

7.5

80

N50

14.0-14.5

1400-1450

≥10.0

≥796

≥11

≥876

382-406

48-51

7.5

80

N52

14.3-14.8

1430-1480

≥10.0

≥796

≥11

≥876

398-422

50-53

7.5

80

30M

10.8-11.3

1080-1130

≥10.0

≥796

≥14

≥1114

223-247

28-31

7.5

100

33M

11.3-11.7

1130-1170

≥10.5

≥836

≥14

≥1114

247-263

31-33

7.5

100

35M

11.7-12.2

1170-1220

≥10.9

≥868

≥14

≥1114

263-287

33-36

7.5

100

38M

12.2-12.5

1220-1250

≥11.3

≥899

≥14

≥1114

287-310

36-39

7.5

100

40M

12.5-12.8

1250-1280

≥11.6

≥923

≥14

≥1114

302-326

38-41

7.5

100

42M

12.8-13.2

1280-1320

≥12.0

≥955

≥14

≥1114

318-342

40-43

7.5

100

45M

13.2-13.8

1320-1380

≥12.5

≥995

≥14

≥1114

342-366

43-46

7.5

100

48M

13.6-14.3

1360-1430

≥12.9

≥1027

≥14

≥1114

366-390

46-49

7.5

100

50M

14.0-14.5

1400-1450

≥13.0

≥1033

≥14

≥1114

382-406

48-51

7.5

100

30H

10.8-11.3

1080-1130

≥10.0

≥796

≥17

≥1353

223-247

28-31

7.5

120

33H

11.3-11.7

1130-1170

≥10.5

≥836

≥17

≥1353

247-271

31-34

7.5

120

35H

11.7-12.2

1170-1220

≥10.9

≥868

≥17

≥1353

263-287

33-36

7.5

120

38H

12.2-12.5

1220-1250

≥11.3

≥899

≥17

≥1353

287-310

36-39

7.5

120

40H

12.5-12.8

1250-1280

≥11.6

≥923

≥17

≥1353

302-326

38-41

7.5

120

42H

12.8-13.2

1280-1320

≥12.0

≥955

≥17

≥1353

318-342

40-43

7.5

120

45H

13-13.6

1300-1360

≥12.1

≥963

≥17

≥1353

326-358

43-46

7.5

120

48H

13.7-14.3

1370-1430

≥12.5

≥995

≥17

≥1353

366-390

46-49

7.5

120

30SH

10.8-11.3

1080-1130

≥10.1

≥804

≥20

≥1592

223-247

28-31

7.5

150

33SH

11.3-11.7

1130-1170

≥10.6

≥844

≥20

≥1592

247-271

31-34

7.5

150

35SH

11.7-12.2

1170-1220

≥11.0

≥876

≥20

≥1592

263-287

33-36

7.5

150

38SH

12.2-12.5

1220-1250

≥11.4

≥907

≥20

≥1592

287-310

36-39

7.5

150

40SH

12.5-12.8

1240-1280

≥11.8

≥939

≥20

≥1592

302-326

38-41

7.5

150

42SH

12.8-13.2

1280-1320

≥12.4

≥987

≥20

≥1592

318-342

40-43

7.5

150

45SH

13.2-13.8

1320-1380

≥12.6

≥1003

≥20

≥1592

342-366

43-46

7.5

150

28UH

10.2-10.8

1020-1080

≥9.6

≥764

≥25

≥1990

207-231

26-29

7.5

180

30UH

10.8-11.3

1080-1130

≥10.2

≥812

≥25

≥1990

223-247

28-31

7.5

180

33UH

11.3-11.7

1130-1170

≥10.7

≥852

≥25

≥1990

247-271

31-34

7.5

180

35UH

11.8-12.2

1180-1220

≥10.8

≥860

≥25

≥1990

263-287

33-36

7.5

180

38UH

12.2-12.5

1220-1250

≥11.0

≥876

≥25

≥1990

287-310

36-39

7.5

180

40UH

12.5-12.8

1240-1280

≥11.3

≥899

≥25

≥1990

302-326

38-41

7.5

180

28EH

10.4-10.9

1040-1090

≥9.8

≥780

≥30

≥2388

207-231

26-29

7.5

200

30EH

10.8-11.3

1080-1130

≥10.2

≥812

≥30

≥2388

223-247

28-31

7.5

200

33EH

11.3-11.7

1130-1170

≥10.5

≥836

≥30

≥2388

247-271

31-34

7.5

200

35EH

11.7-12.2

1170-1220

≥11.0

≥876

≥30

≥2388

263-287

33-36

7.5

200

38EH

12.2-12.5

1220-1250

≥11.3

≥899

≥30

≥2388

287-310

36-39

7.5

200

28AH

10.4-11.0

1040-1100

≥9.7

≥772

≥35

≥2786

207-231

26-29

7.5

220

30AH

10.8-11.7

1080-1170

≥10.2

≥812

≥35

≥2786

223-255

28-32

7.5

220

33AH

11.4-12.2

1140-1220

≥10.7

≥851

≥35

≥2786

247-279

31-35

7.5

220

35AH

11.7-12.5

1170-1250

≥11.0

≥876

≥35

≥2786

263-295

33-37

7.5

220


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