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sintered neodymium magnet magnetic property

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neodymium magnet magnetic property, ndfeb magnet magnetic property, magnetic property of sintered neodymium magnets, products attibute of sintered neodymium magnets

Magnetic property of sintered neodymium magnets, magnetic property of sintered ndfeb magnets, products attribute of sintered neodymium magnets, products attribute of sintered ndfeb magnets 

About Sintered NdFeB : Sintered Neodymium-iron-boron ( NdFeB ) , sintered neodymium magnets known as the third generation of rare earth permanent magnet, is made from 32% of Nd, 64% of Fe, 1% of B (Nd 12 Fe 14 B) as well as few of other elements like Dy, Tb, Co, Nb, Ga, Al, Cu, etc.

 

China magnet|china ndfeb magnet neodymium magnet strong magnet supplier

 

Its Characteristic:

• known as “king of magnet” for its high Br( remanence ), high coercive force, and high BH(max energy). Its BH can be more than 400KJ/M 3 . Due to its strong coercive force and (BH)max, it can suck heavy objects weighing 600 times its weight. Compared with ferrite magnet of same volume, Its (BH)max is ten times as high as ferrite magnets. So to get the same magnetic fields, we can replace big ferrite magnet with small NdFeb.

• Steady property. Stocked in suitable temperature, moisture, etc without interfered magnetic fields, the magnetic property can be almost lasting forever.

• But hard and crisp. During operation, the operator should be very careful in case the magnets impact each other to threaten the safety and break themselves into pieces.

• But easy to be erosive.

Its application:

mainly applied in VCM of computer disk drive, Magnetic resonance imaging(MRI), acoustic equipment, microwave communication, magnetic machines( magnetic pump, magnetic valve), home appliance, etc. With the improvement of magnetic property, NdFeB has been used in other new high-tech fields.

Grade of Neodymium magnets

Each type of ndfeb according to the maximum magnetic energy is divided into several grades
Ndfeb magnetic material magnetic grades are: N35 - N52 N35M - N50M N30H - N48H N30SH - N48SH N28UH - N40UH N28EH - N35EH. N28AH-N33AH etc.

Generally,  

Normal coercive force=N,   Middle coercive force=M,   High coercive force= H,  Special High coercive= SH. 

Ultra High coercive force=UH,  Extra High coercive force EH ,    AH is also available. 

 

 

Grade Remanence Br Coercivity Hcb Intrinxic Coercivity  Max. Energy  Max temperature
Br Hcb Hcj  BH  max
mT kGs kA/m kOe kA/m kOe kJ/m3 MGOe
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 ℃

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