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Neodymium Magnet
(NdFeB Magnet)

  

Magnetic Characteristic and Physical Properties Of Sintered NdFeB Magnet

Sintered NdFeB magnets are composed of Nd, Fe, B and other few minor elements. Sintered NdFeB is the most powerful rare earth magnet today processing high energy product and good coercive force.
Customers usually require sintered NdFeB magnet with coating, such as Zinc, or Nickel, or NiCuNi multi-layer, or Epoxy etc.

Because of powerful magnetic force, if customers want to ship sintered NdFeB magnets by air or express, we always packing them with iron sheets and foam.

According to working temperature and Coercivity, we have Sintered NdFeB in some series, N series, M series, H series, SH, UH and EH.

We can produce Sintered NdFeB in grade N35-N52, 30M-50M, 30H-48H, 30SH-45SH, 28UH-40UH, 28EH-38EH.

Because of high magnetic properties, Sintered NdFeB is widely used in electronics, electrical machinery, medical equipment, toys, packaging, hardware, machinery, aerospace and other areas, the more common are sintered NdFeB permanent magnet motors, speakers, magnetic separator, computer disk drives, MRI etc.

 

Grade

Br
mT
(kGs)

Hcb
kA/m
(kOe)

Hcj
kA/m
(kOe)

（ BH ）max kJ/m3
(MGOe)

(Tw)

N27

1030-1080
(10.3-10.8)

≥ 796
( ≥ 10.0)

≥ 955
( ≥ 12)

199-231
(25-29)

80 ℃

N30

1080-1130
(10.8-11.3)

≥ 796
( ≥ 10.0)

≥ 955
( ≥ 12)

223-247
(28-31)

80 ℃

N33

1130-1170
(11.3-11.7)

≥ 836
( ≥ 10.5)

≥ 955
( ≥ 12)

247-271
(31-34)

80 ℃

N35

1170-1220
(11.7-12.2)

≥ 868
( ≥ 10.9)

≥ 955
( ≥ 12)

263-287
(33-36)

80 ℃

N38

1220-1250
(12.2-12.5)

≥ 899
( ≥ 11.3)

≥ 955
( ≥ 12)

287-310
(36-39)

80 ℃

N40

1250-1280
(12.5-12.8)

≥ 907
( ≥ 11.4)

≥ 955
( ≥ 12)

302-326
(38-41)

80 ℃

N42

1280-1320
(12.8-13.2)

≥ 915
( ≥ 11.5)

≥ 955
( ≥ 12)

318-342
(40-43)

80 ℃

N45

1320-1380
(13.2-13.8)

≥ 923
( ≥ 11.6)

≥ 955
( ≥ 12)

342-366
(43-46)

80 ℃

N48

1380-1420
(13.8-14.2)

≥ 923
( ≥ 11.6)

≥ 876
( ≥ 12)

366-390
(46-49)

80 ℃

N50

1400-1450
(14.0-14.5)

≥ 796
( ≥ 10.0)

≥ 876
( ≥ 11)

382-406
(48-51)

60 ℃

N52

1430-1480
(14.3-14.8)

≥ 796
( ≥ 10.0)

≥ 876
( ≥ 11)

398-422
(50-53)

60 ℃

30M

1080-1130
(10.8-11.3)

≥ 796
( ≥ 10.0)

≥ 1114
( ≥ 14)

223-247
(28-31)

100 ℃

33M

1130-1170
(11.3-11.7)

≥ 836
( ≥ 10.5)

≥ 1114
( ≥ 14)

247-263
(31-33)

100 ℃

35M

1170-1220
(11.7-12.2)

≥ 868
( ≥ 10.9)

≥ 1114
( ≥ 14)

263-287
(33-36)

100 ℃

38M

1220-1250
(12.2-12.5)

≥ 899
( ≥ 11.3)

≥ 1114
( ≥ 14)

287-310
(36-39)

100 ℃

40M

1250-1280
(12.5-12.8)

≥ 923
( ≥ 11.6)

≥ 1114
( ≥ 14)

302-326
(38-41)

100 ℃

42M

1280-1320
(12.8-13.2)

≥ 955
( ≥ 12.0)

≥ 1114
( ≥ 14)

318-342
(40-43)

100 ℃

45M

1320-1380
(13.2-13.8)

≥ 995
( ≥ 12.5)

≥ 1114
( ≥ 14)

342-366
(43-46)

100 ℃

48M

1360-1430
(13.6-14.3)

≥ 1027
( ≥ 12.9)

≥ 1114
( ≥ 14)

366-390
(46-49)

100 ℃

50M

1400-1450
(14.0-14.5)

≥ 1033
( ≥ 13.0)

≥ 1114
( ≥ 14)

382-406
(48-51)

100 ℃

30H

1080-1130
(10.8-11.3)

≥ 796
( ≥ 10.0)

≥ 1353
( ≥ 17)

223-247
(28-31)

120 ℃

33H

1130-1170
(11.3-11.7)

≥ 836
( ≥ 10.5)

≥ 1353
( ≥ 17)

247-271
(31-34)

120 ℃

35H

1170-1220
(11.7-12.2)

≥ 868
( ≥ 10.9)

≥ 1353
( ≥ 17)

263-287
(33-36)

120 ℃

38H

1220-1250
(12.2-12.5)

≥ 899
( ≥ 11.3)

≥ 1353
( ≥ 17)

287-310
(36-39)

120 ℃

40H

1250-1280
(12.5-12.8)

≥ 923
( ≥ 11.6)

≥ 1353
( ≥ 17)

302-326
(38-41)

120 ℃

42H

1280-1320
(12.8-13.2)

≥ 955
( ≥ 12.0)

≥ 1353
( ≥ 17)

318-342
(40-43)

120 ℃

45H

1300-1360
(13-13.6)

≥ 963
( ≥ 12.1)

≥ 1353
( ≥ 17)

326-358
(43-46)

120 ℃

48H

1370-1430
(13.7-14.3)

≥ 995
( ≥ 12.5)

≥ 1353
( ≥ 17)

366-390
(46-49)

120 ℃

30SH

1080-1130
(10.8-11.3)

≥ 804
( ≥ 10.1)

≥ 1592
( ≥ 20)

223-247
(28-31)

150 ℃

33SH

1130-1170
(11.3-11.7)

≥ 844
( ≥ 10.6)

≥ 1592
( ≥ 20)

247-271
(31-34)

150 ℃

35SH

1170-1220
(11.7-12.2)

≥ 876
( ≥ 11.0)

≥ 1592
( ≥ 20)

263-287
(33-36)

150 ℃

38SH

1220-1250
(12.2-12.5)

≥ 907
( ≥ 11.4)

≥ 1592
( ≥ 20)

287-310
(36-39)

150 ℃

40SH

1240-1280
(12.5-12.8)

≥ 939
( ≥ 11.8)

≥ 1592
( ≥ 20)

302-326
(38-41)

150 ℃

42SH

1280-1320
(12.8-13.2)

≥ 987
( ≥ 12.4)

≥ 1592
( ≥ 20)

318-342
(40-43)

150 ℃

45SH

1320-1380
(13.2-13.8)

≥ 1003
( ≥ 12.6)

≥ 1592
( ≥ 20)

342-366
(43-46)

150 ℃

28UH

1020-1080 (10.2-10.8)

≥ 764
( ≥ 9.6)

≥ 1990
( ≥ 25)

207-231
(26-29)

180 ℃

30UH

1080-1130 (10.8-11.3)

≥ 812
( ≥ 10.2)

≥ 1990
( ≥ 25)

223-247
(28-31)

180 ℃

33UH

1130-1170
(11.3-11.7)

≥ 852
( ≥ 10.7)

≥ 1990
( ≥ 25)

247-271
(31-34)

180 ℃

35UH

1180-1220
(11.8-12.2)

≥ 860
( ≥ 10.8)

≥ 1990
( ≥ 25)

263-287
(33-36)

180 ℃

38UH

1220-1250
(12.2-12.5)

≥ 876
( ≥ 11.0)

≥ 1990
( ≥ 25)

287-310
(36-39)

180 ℃

40UH

1240-1280
(12.5-12.8)

≥ 899
( ≥ 11.3)

≥ 1990
( ≥ 25)

302-326
(38-41)

180 ℃

28EH

1040-1090
(10.4-10.9)

≥ 780
( ≥ 9.8)

≥ 2388
( ≥ 30)

207-231
(26-29)

200 ℃

30EH

1080-1130 (10.8-11.3)

≥ 812
( ≥ 10.2)

≥ 2388
( ≥ 30)

223-247
(28-31)

200 ℃

33EH

1130-1170
(11.3-11.7)

≥ 836
( ≥ 10.5)

≥ 2388
( ≥ 30)

247-271
(31-34)

200 ℃

35EH

1170-1220
(11.7-12.2)

≥ 876
( ≥ 11.0)

≥ 2388
( ≥ 30)

263-287
(33-36)

200 ℃

38EH

1220-1250
(12.2-12.5)

≥ 899
( ≥ 11.3)

≥ 2388
( ≥ 30)

287-310
(36-39)

200 ℃



Demagnetization Curves Of Sintered NdFeB Magnet
Demagnetization curves of Sintered NdFeB N40 at different temperature

Demagnetization curves of Sintered NdFeB N42 at different temperature

Demagnetization curves of Sintered NdFeB N33SH at different temperature

Demagnetization curves of Sintered NdFeB N38SH at different temperature

Demagnetization curves of Sintered NdFeB N30UH at different temperature

Demagnetization curves of Sintered NdFeB N30SH at different temperature

 

E-mail: sz.magnet@mailcenter.com.cn
Fax: (86)755 26915592
Tel: (86)755 26923096
Online Order
Address: China Rare Earth Magnet Co.
5F, Haiyun, Haijing Building, OCT, Nanshan District, Shenzhen, China. Post Code: 518053

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