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Products: Permanent Magnets >> Sintered NdFeB Magnet (Neodymium Iron Boron)

We are professional NdFeB, NdFeB magnet, SmCo magnet, AlNiCo magnet, Hard Ferrite magnet, rubber magnet, flexible magnet sheet, flexible magnet for micro motor, fridge magnet,  magnetic toys, magnetic assemblies, bonded magnet manufacturer and factory in China. We can produce NdFeB magnet, sintered NdFeB magnet according to your requirements. More types of NdFeB magnets, sintered NdFeB magnet wanted, please contact us right now!

 

General Introduction

Sintered Magnet: is one of the high performance rare earth permanent magnets, which use neodymium (Nd), iron (Fe), and boron (B) as their main ingredients and is susceptible to demagnetization when exposed to elevated temperatures. There are many grades which can withstand high temperatures, but several factors will dictate the performance of the Neodymium magnet. There are Sintered NdFeB, Sintered AlNiCo, Sintered SmCo and Sintered Ferrite.

NdFeB magnets, have the characteristics of :

  • Super strong Br Resident induction.Excellent demagnetization resistance capability.

    Good Price relative to its high magnetic properties.

    Coating is needed for NdFeB

  • Surface Treatment Method: Type Information
    Metallic Zinc, Nickel, Nickel+Nickel, Copper+Nickel, Nickel+Copper+Nickel,
    Gold, Organic Epoxy, Nickel+Epoxy coating
    Temporary Surface: Passivation
    Dimension Available

     

    Sintered NdFeB Magnets production process >>

What shapes can it be formed?          

NdFeB magnet, Sintered NdFeB magnet

ndfeb ndfeb
NdFeB magnets for motor, generator,driver in various specification Tile-shaped and special-shaped ndfeb magnet
ndfeb ndfeb
NdFeB Blocks in various specification NdFeB products painted with epoxy resin
ndfeb ndfeb
NdFeB Circles in various specification NdFeb Cylinders in various specification
ndfeb magnet rubber coated ndfeb magnet
Special Shape of NdFeB Magnet Rubber Coated NdFeB Magnet
ndfeb magnet, n52 magnet qqmag,magnetic sphere
Special Shape of NdFeB Magnet QQMAG: Magnetic Amazing Sphere

Magnetic properties of Sintered NdFeB magnet:

Grade

Remanence Coercive Force Intrinsic Coercive Force Max. energy product Max.
Operating
Temperature

Br
mT
(kGs)

Hcb
kA/m
(kOe)

Hcj
kA/m
(kOe)

( BH )max kJ/m3
(MGOe)

Tw

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 ℃

30AH

1080-1120
(10.8-11.2)

≥ 812
( ≥ 10.2)

≥ 2785
( ≥ 35)

223-255
(28-32)

220 ℃

33AH

1120-1170
(11.2-11.7)

≥ 812
( ≥ 10.2)

≥ 2785
( ≥ 35)

247-271
(31-34)

220 ℃

Physical and Mechanical Properties of ndfeb:

Thermal Conductivity

7.7 kcal/m-h-°C

Young’s Modulus

1.7 x 104 kg/mm2

Bending Strength

24 kg/mm2

Compressive Strength

80 kg/mm2

Electrical Resistivity

160 µ-ohm-cm/cm2

Density

7.4-7.55 g/cm3

Vickers Hardness

500 - 600

Available coatings for sintered ndfeb magnet:

Available Coatings:

Surface

Coating

Thickness (Microns)

Color

Resistance

Passivation

 

1

Silver Grey

Temporary Protection

Nickel

Ni+Ni

10-20

Bright Silver

Excellent against Humidity

Ni+Cu+Ni

Zinc

Zn

8-20

Bright Blue

Good Against Salt Spray

C-Zn

Shinny Color

Excellent Against Salt Spray

Tin

Ni+Cu+Sn

15-20

Silver

Superior Against Humidity

Gold

Ni+Cu+Au

10-20

Gold

Superior Against Humidity

Copper

Ni+Cu

10-20

Gold

Temporary Protection

Epoxy

Epoxy

15-25

Black, Red, Grey

Excellent Against Humidity
& Salt Spray

Ni+Cu+Epoxy

Zn+Epoxy

Chemical

Ni

10-20

Silver Grey

Excellent Against Humidity

Parylene

Parylene

5-20

Grey

Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria.
FDA Approved.

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