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Neodymium/NdFeB Magnets

Neodymium/NdFeB Magnets

Category: sintered neodymium magnets/ sintered NdFeB magnets/rare earth magnets

Advantages: high performance-price ratio; high magnetic energy, good machanical properties

Disadvantages: poor temperature characteristic; poor corrosion resistance,surface treatment needed; price is not stable

Product Description



Neodymium-iron-boron magnets short as Nd-Fe-B magnets, NIB magnets, neo magnets or neodymium magnets. Following called as NdFeB magnets or neodymium magnets.

As a kind of rare earth magnets, neodymium magnets were developed from the year of 1983 , it is the most powerful rare-earth permanent magnet so far, and it sometimes called as super strong magnets.  Neodymium magnets have the higher Br, and BH(max) than any other magnet formula. It has superior magnetic properties than all other magnetic materials , so it is widely used in industry production and daily life.

The outstanding characteristics for neodymium magnets are as follows--------

  • Higher magnetic properties than other magnets which realize the smallest size and lightest weight in designing devices. As a real powerful magnets,have strongest magnetic force.
  • Being mostly an iron based alloy, which make it easy to be oxidation or rust. To eliminate such a problem, the user should consider suitable surface treatment.
  • Being less prone to chipping during handing
  • Lower temperature coefficient of magnetic properties than ceramic but higher than SmCo type rare earth magnet. Therefore, this NdFeB type rare earth magnet will suffer irreversible loss at high temperature
  • The Nd-Fe-B permanent magnets are the next century magnets, that used in a wide range of industries including computer, automobile, electric machinary, electri-sound devices, automatic control, magnetic force mechanism, microwave commnication, petrochemical industry, medical apparatus and equipment. The magnets are the ideal materials for the subminiature magnetic devices with high function.

NdFeB magnets is made from alloys of rare earth elements, such as neodymium,oxide iron, boron,.. It’s the latest result of the development of rare-earth permanent magnetic materials. Because of its excellent performance and super strong magnetic force, it called as king magnets. NdFeB magnets with the highest maximum energy, make the instruments and meters,permanent magnetic electrical machinery,magnetic separator more smaller, more lighter  and more thinner .It is used when small size and maximum magnetic power needed.

NdFeB permanent magnets can be divided into bonded NdFeB magnets and sintered NdFeB magnets according to the processing methods. Bonded neodymium magnets is shaped by injecting,sintered neodymium magnets shaped by pressing and sintered in vacuum condition.

Sintered neodymium magnets are high performance magnets and are also the strongest permanent magnets so far. It can be machined into different shapes, such as neodymium ring magnets, neodymium disc  magnets, neodymium block magnets, neodymium cylinder magnets, neodymium countersunk magnets, neodymium cone magnets, neodymium segment/arc magnets and neodymium sphere magnets (magnetic balls).

Meank magnetics has very strong processing ability,we produce more and more irregular shapes. Please not hesitate to send us magnets inquiry and magnets order. We'll be your reliable neodymium magnets producer.

Magnet
Type(Grade)

Remanence (Br)

HcB

HcJ

(B-H)max

Max.Temp.

(KGs)

(mT)

(Koe)

(KA/m)

(Koe)

(KA/m)

(MGOe)

(KJ/m3)

N35

11.7-12.2

1170-1220

≥10.9

≥868

≥12

≥955

33-36

263-287

80℃

N38

12.2-12.5

1220-1250

≥11.3

≥899

≥12

≥955

36-39

287-310

80℃

N40

12.5-12.8

1250-1280

≥11.4

≥907

≥12

≥955

38-41

302-326

80℃

N42

12.8-13.2

1280-1320

≥11.5

≥915

≥12

≥955

40-43

318-342

80℃

N45

13.2-13.8

1320-1380

≥11.6

≥923

≥12

≥955

43-46

342-366

80℃

N48

13.8-14.2

1380-1420

≥10.5

≥836

≥12

≥955

46-49

366-390

80℃

N50

14.0-14.5

1400-1450

≥10.0

≥796

≥11

≥876

48-51

382-406

80℃

N52

14.3-14.8

1430-1480

≥10.0

≥796

≥11

≥876

50-53

398-422

60℃

N54

14.5-15.1

1450-1510

≥10.0

≥796

≥11

≥876

50-53

398-422

60℃

33M

11.3-11.7

1130-1170

≥10.5

≥836

≥14

≥1114

31-33

247-263

100℃

35M

11.7-12.2

1170-1220

≥10.9

≥868

≥14

≥1114

33-36

263-287

100℃

38M

12.2-12.5

1220-1250

≥11.3

≥899

≥14

≥1114

36-39

287-310

100℃

40M

12.5-12.8

1250-1280

≥11.6

≥923

≥14

≥1114

38-41

302-326

100℃

42M

12.8-13.2

1280-1320

≥12.0

≥955

≥14

≥1114

40-43

318-342

100℃

45M

13.2-13.8

1320-1380

≥12.5

≥995

≥14

≥1114

43-46

342-366

100℃

48M

13.6-14.3

1360-1430

≥12.9

≥1027

≥14

≥1114

46-49

366-390

100℃

50M

14.0-14.5

1400-1450

≥13.0

≥1033

≥14

≥1114

48-51

382-406

100℃

35H

11.7-12.2

1170-1220

≥10.9

≥868

≥17

≥1353

33-36

263-287

120℃

38H

12.2-12.5

1220-1250

≥11.3

≥899

≥17

≥1353

36-39

287-310

120℃

40H

12.5-12.8

1250-1280

≥11.6

≥923

≥17

≥1353

38-41

302-326

120℃

42H

12.8-13.2

1280-1320

≥12.0

≥955

≥17

≥1353

40-43

318-342

120℃

45H

13.2-13.6

1320-1360

≥12.1

≥963

≥17

≥1353

43-46

342-366

120℃

48H

13.7-14.3

1370-1430

≥12.5

≥995

≥17

≥1353

46-49

366-390

120℃

35SH

11.7-12.2

1170-1220

≥11.0

≥876

≥20

≥1592

33-36

263-287

150℃

38SH

12.2-12.5

1220-1250

≥11.4

≥907

≥20

≥1592

36-39

287-310

150℃

40SH

12.5-12.8

1250-1280

≥11.8

≥939

≥20

≥1592

38-41

302-326

150℃

42SH

12.8-13.2

1280-1320

≥12.4

≥987

≥20

≥1592

40-43

318-342

150℃

45SH

13.2-13.8

1320-1380

≥12.6

≥1003

≥20

≥1592

43-46

342-366

150℃

28UH

10.2-10.8

1020-1080

≥9.6

≥764

≥25

≥1990

26-29

207-231

180℃

30UH

10.8-11.3

1080-1130

≥10.2

≥812

≥25

≥1990

28-31

223-247

180℃

33UH

11.3-11.7

1130-1170

≥10.7

≥852

≥25

≥1990

31-34

247-271

180℃

35UH

11.8-12.2

1180-1220

≥10.8

≥860

≥25

≥1990

33-36

263-287

180℃

38UH

12.2-12.5

1220-1250

≥11.0

≥876

≥25

≥1990

36-39

287-310

180℃

40UH

12.5-12.8

1250-1280

≥11.3

≥899

≥25

≥1990

38-41

302-326

180℃

28EH

10.4-10.9

1040-1090

≥9.8

≥780

≥30

≥2388

26-29

207-231

200℃

30EH

10.8-11.3

1080-1130

≥10.2

≥812

≥30

≥2388

28-31

223-247

200℃

33EH

11.3-11.7

1130-1170

≥10.5

≥836

≥30

≥2388

31-34

247-271

200℃

35EH

11.7-12.2

1170-1220

≥11.0

≥876

≥30

≥2388

33-36

263-287

200℃

38EH

12.2-12.5

1220-1250

≥11.3

≥899

≥30

≥2388

36-39

287-310

200℃

28AH

10.4-10.9

1040-1090

≥9.9

≥787

≥33

≥2642

26-29

207-231

230℃

30AH

10.8-11.3

1080-1130

≥10.3

≥819

≥33

≥2642

28-31

223-247

230℃

33AH

11.3-11.7

1130-1170

≥10.6

≥843

≥33

≥2642

31-34

247-271

230℃


Note:
●The above mentioned magnetic performance dates are all given under room temperature.
●The above mentioned maximum working temperature of neodymium magnets is changeable due to the ratio of length and diameter,surface treatment and environmental factors.
●All above mentioned magnetic property dates are just for reference.
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