Sintered NdFeB Magnet

Neodymium magnet, also well known as NdFeB magnet, is the strongest permanent magnet material in the world. Neodymium Magnet is one member of rare earth permanent magnets, neodymium rare-earth magnet, another common rare earth magnet is the SmCo magnet.

Compared with other permanent magnet materials, sintered neodymium magnet has outstanding advantages in magnetic properties. It has extremely high magnetic energy product, coercivity, and energy density, at the same time, its mechanical properties are easy to process. These excellent properties have made sintered NdFeB permanent magnets widely used in modern industry and electronic technology. The common ones are permanent magnet motors, speakers, magnetic separators, computer disk drives, and magnetic resonance imaging equipment. In 2000, the output value of rare earth permanent magnets surpassed ferrite for the first time. In 2010, the output value of sintered neodymium permanent magnet surpassed ferrite, becoming a veritable “protagonist” in the permanent magnet industry.

Applications of sintered neodymium magnet

Sintered Neodymium Magnet is the most popular magnet in the world because of the powerful neodymium magnet. It supplies the best magnetic force in a small volume, which means it makes the device or product smaller. For example, in the past, a motor will be driven with a force between two wire coils prior to the magnet being founded. The magnetic field is produced by the wire coils when the current goes through the wire. The magnetic performance request the wire coils big, that the motor would be huge. now the DC or the brushless motor would request a small neodymium magnet to drive the motor. So many products will use sintered neodymium magnets, like permanent magnet motors, speakers, magnetic separators, computer disk drives, magnetic resonance imaging equipment, meters, and so on. the cost of neodymium magnets is smaller.

The electric vehicle industry development is pushing the sintered neodymium magnet to quickly extend the market. The driving motor, the generator, the electric control system, you can find the neodymium magnet everywhere.

neodymium rod magnet

neodymium block magnet

neodymium ring magnet

neodymium countersunk magnet

neodymium hook magnet

n52 neodymium magnet

Magnetic Properties of Sintered NdFeB Magnet

Grade Remanence Coercivity Intrinsic Coercivity Max. Energy Product Max. Working Temperature Density
Br Hcb Hcj (BH)max
T kGs kA/m kOe kA/m kOe kJ/m3 MGOe g/cm3
N30 1.08-1.13 10.8-11.3 ≥798 ≥10.0 ≥955 ≥12 223-247 28-31 80 ≥7.5
N33 1.13-1.17 11.3-11.7 ≥836 ≥10.5 ≥955 ≥12 247-271 31-34 80 ≥7.5
N35 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥955 ≥12 263-287 33-36 80 ≥7.5
N38 1.22-1.25 12.2-12.5 ≥899 ≥11.3 ≥955 ≥12 287-310 36-39 80 ≥7.5
N40 1.25-1.28 12.5-12.8 ≥907 ≥11.4 ≥955 ≥12 302-326 38-41 80 ≥7.5
N42 1.28-1.32 12.8-13.2 ≥915 ≥11.5 ≥955 ≥12 318-342 40-43 80 ≥7.5
N45 1.32-1.38 13.2-13.8 ≥923 ≥11.6 ≥955 ≥12 342-366 43-46 80 ≥7.5
N48 1.38-1.42 13.8-14.2 ≥923 ≥11.6 ≥955 ≥12 366-390 46-49 80 ≥7.5
N50 1.40-1.45 14.0-14.5 ≥796 ≥10.0 ≥876 ≥11 382-406 48-51 80 ≥7.5
N52 1.43-1.48 14.3-14.8 ≥796 ≥10.0 ≥876 ≥11 398-422 50-53 80 ≥7.5
N55 1.46-1.52 14.6-15.2 ≥796 ≥10.0 ≥876 ≥11 414-430 52-54 80 ≥7.5
N35M 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥1114 ≥14 263-287 33-36 100 ≥7.5
N38M 1.22-1.25 12.2-12.5 ≥899 ≥11.3 ≥1114 ≥14 287-310 36-39 100 ≥7.5
N40M 1.25-1.28 12.5-12.8 ≥923 ≥11.6 ≥1114 ≥14 302-326 38-41 100 ≥7.5
N42M 1.28-1.32 12.8-13.2 ≥955 ≥12.0 ≥1114 ≥14 318-342 40-43 100 ≥7.5
N45M 1.32-1.38 13.2-13.8 ≥995 ≥12.5 ≥1114 ≥14 342-366 43-46 100 ≥7.5
N48M 1.37-1.43 13.7-14.3 ≥1027 ≥12.9 ≥1114 ≥14 366-390 46-49 100 ≥7.5
N50M 1.40-1.45 14.0-14.5 ≥1033 ≥13.0 ≥1114 ≥14 382-406 48-51 100 ≥7.5
N52M 1.43-1.48 14.3-14.8 ≥1050 ≥13.2 ≥1114 ≥14 398-422 50-53 100 ≥7.5
N54M 1.45-1.50 14.5-15.0 ≥1051 ≥13.2 ≥1114 ≥14 414-438 52-55 100 ≥7.5
N35H 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥1353 ≥17 263-287 33-36 120 ≥7.5
N38H 1.22-1.25 12.2-12.5 ≥899 ≥11.3 ≥1353 ≥17 287-310 36-39 120 ≥7.5
N40H 1.25-1.28 12.5-12.8 ≥923 ≥11.6 ≥1353 ≥17 302-326 38-41 120 ≥7.5
N42H 1.28-1.32 12.8-13.2 ≥955 ≥12.0 ≥1353 ≥17 318-342 40-43 120 ≥7.5
N45H 1.32-1.36 13.2-13.6 ≥963 ≥12.1 ≥1353 ≥17 342-366 43-46 120 ≥7.5
N48H 1.37-1.43 13.7-14.3 ≥995 ≥12.5 ≥1353 ≥17 366-390 46-49 120 ≥7.5
N50H 1.40-1.45 14.0-14.5 ≥1011 ≥12.7 ≥1353 ≥17 382-406 48-51 120 ≥7.5
N52H 1.43-1.48 14.3-14.8 ≥1027 ≥12.9 ≥1353 ≥17 398-422 50-53 120 ≥7.5
N33SH 1.14-1.18 11.4-11.8 ≥852 ≥10.7 ≥1592 ≥20 247-279 31-35 150 ≥7.5
N35SH 1.17-1.22 11.7-12.2 ≥876 ≥11.0 ≥1592 ≥20 263-287 33-36 150 ≥7.5
N38SH 1.22-1.25 12.2-12.5 ≥907 ≥11.4 ≥1592 ≥20 287-310 36-39 150 ≥7.5
N40SH 1.25-1.28 12.5-12.8 ≥939 ≥11.8 ≥1592 ≥20 302-326 38-41 150 ≥7.5
N42SH 1.28-1.32 12.8-13.2 ≥987 ≥12.4 ≥1592 ≥20 318-342 40-43 150 ≥7.5
N45SH 1.32-1.38 13.2-13.8 ≥1003 ≥12.6 ≥1592 ≥20 342-366 43-46 150 ≥7.5
N48SH 1.37-1.43 13.7-14.3 ≥1027 ≥12.9 ≥1592 ≥20 366-390 46-49 150 ≥7.5
N50SH 1.40-1.45 14.0-14.5 ≥1003 ≥12.6 ≥1592 ≥20 382-406 48-51 150 ≥7.5
N28UH 1.04-1.08 10.4-10.8 ≥764 ≥9.6 ≥1990 ≥25 207-231 26-29 180 ≥7.5
N30UH 1.08-1.13 10.8-11.3 ≥812 ≥10.2 ≥1990 ≥25 223-247 28-31 180 ≥7.5
N33UH 1.13-1.17 11.3-11.7 ≥852 ≥10.7 ≥1990 ≥25 247-271 31-34 180 ≥7.5
N35UH 1.17-1.22 11.7-12.2 ≥860 ≥10.8 ≥1990 ≥25 263-287 33-36 180 ≥7.5
N38UH 1.22-1.25 12.2-12.5 ≥876 ≥11.0 ≥1990 ≥25 287-310 36-39 180 ≥7.5
N40UH 1.25-1.28 12.5-12.8 ≥899 ≥11.3 ≥1990 ≥25 302-326 38-41 180 ≥7.5
N42UH 1.28-1.32 12.8-13.2 ≥899 ≥11.3 ≥1990 ≥25 318-342 40-43 180 ≥7.5
N45UH 1.32-1.36 13.2-13.6 ≥908 ≥11.4 ≥1990 ≥25 342-366 43-46 180 ≥7.5
N48UH 1.37-1.43 13.7-14.3 ≥908 ≥11.4 ≥1990 ≥25 366-390 46-49 180 ≥7.5
N28EH 1.04-1.08 10.4-10.8 ≥780 ≥9.8 ≥2388 ≥30 207-231 26-29 200 ≥7.5
N30EH 1.08-1.13 10.8-11.3 ≥812 ≥10.2 ≥2388 ≥30 223-247 28-31 200 ≥7.5
N33EH 1.13-1.17 11.3-11.7 ≥836 ≥10.5 ≥2388 ≥30 247-271 31-34 200 ≥7.5
N35EH 1.17-1.22 11.7-12.2 ≥876 ≥11.0 ≥2388 ≥30 263-287 33-36 200 ≥7.5
N38EH 1.22-1.25 12.2-12.5 ≥899 ≥11.3 ≥2388 ≥30 287-310 36-39 200 ≥7.5
N40EH 1.25-1.28 12.5-12.8 ≥899 ≥11.3 ≥2388 ≥30 302-326 38-41 200 ≥7.5
N42EH 1.28-1.32 12.8-13.2 ≥899 ≥11.3 ≥2388 ≥30 318-342 40-43 200 ≥7.5
N45EH 1.32-1.36 13.2-13.6 ≥899 ≥11.3 ≥2388 ≥30 342-366 43-46 200 ≥7.5
N28AH 1.04-1.08 10.4-10.8 ≥787 ≥9.9 ≥2786 ≥35 207-231 26-29 230 ≥7.5
N30AH 1.08-1.13 10.8-11.3 ≥819 ≥10.3 ≥2786 ≥35 223-247 28-31 230 ≥7.5
N33AH 1.13-1.17 11.3-11.7 ≥843 ≥10.6 ≥2786 ≥35 247-271 31-34 230 ≥7.5
N35AH 1.17-1.22 11.7-12.2 ≥876 ≥11.0 ≥2786 ≥35 263-287 33-36 230 ≥7.5
N38AH 1.22-1.25 12.2-12.5 ≥899 ≥11.3 ≥2786 ≥35 287-310 36-39 230 ≥7.5
N40AH 1.26-1.31 12.6-13.1 ≥939 ≥11.8 ≥2786 ≥35 302-334 38-42 230 ≥7.5
N42AH 1.29-1.35 12.9-13.5 ≥955 ≥12.0 ≥2786 ≥35 318-350 40-44 230 ≥7.5
G48SH 1.37-1.42 13.7-14.2 >1011 >13 >1592 >20 358-390 45-49 <150 >7.5
G50SH 1.40-1.45 14.0-14.5 >1027 >13.2 >1592 >20 374-406 47-51 <150 >7.5
G52SH 1.42-1.48 14.2-14.8 >1067 >13.4 >1592 >20 390-422 49-53 <150 >7.5
G55SH 1.46-1.51 14.6-15.1 >1083 >13.6 >1592 >20 406-438 51-55 <150 >7.5
G45UH 1.33-1.38 13.3-13.8 >978 >12.4 >1990 >25 334-366 42-46 <180 >7.5
G48UH 1.37-1.42 13.7-14.2 >1027 >12.9 >1990 >25 358-390 45-49 <180 >7.5
G50UH 1.40-1.45 14.0-14.5 >1051 >13.2 >1990 >25 374-406 47-51 <180 >7.5
G52UH 1.42-1.48 14.2-14.8 >1067 >13.5 >1990 >25 390-422 49-53 <180 >7.5
G54UH 1.46-1.51 14.6-15.1 >1075 >13.5 >1990 >25 406-438 51-55 <180 >7.5
G40EH 1.26-1.31 12.6-13.1 >955 >12.0 >2388 >30 302-334 38-42 <200 >7.5
G44EH 1.29-1.35 12.6-13.1 >971 >12.2 >2388 >30 318-350 40-44 <200 >7.5
G46EH 1.33-1.38 12.6-13.1 >1011 >12.7 >2388 >30 334-366 42-46 <200 >7.5
G48EH 1.37-1.42 12.6-13.1 >1027 >12.9 >2388 >30 358-390 45-49 <200 >7.5
G50EH 1.40-1.45 12.6-13.1 >1051 >13.2 >2388 >30 374-406 47-51 <200 >7.5