Sintered NdFeB - Neodymium Iron Boron

This family of rare earth transition metal alloys has the highest energy products of all permanent magnet materials and coercivities ranging from 12 kOe to as high as 35 kOe. Many devices that once used Alnico or Ceramic magnets have replaced them with NdFeB magnets due to their high energies and high coercivities. 

Please refer to the below table for sintered NdFeB materials specs:

To view the demag curves click the grades in the chart. 

Download sintered NdFeB Materials Chart - click here

Grade Remanence Coercivity Max Energy Product Temperature
Coefficient
Max Working
Temperature
Br HcB HcJ (BH)max α(Br) 𝞫(HcJ) TwMax
T kGs kA/m kOe kA/m kOe kJ/m³ MGOe %/°C %/°C ° C
N35 1.17-1.22 11.7-12.2 ≥860 ≥10.8 ≥955 ≥12 263-287 33-36 -0.12 -0.75 80
N38 1.22-1.25 12.2-12.5 ≥860 ≥11.2 ≥955 ≥12 287-310 36-39 -0.12 -0.75 80
N40 1.25-1.28 12.5-12.8 ≥860 ≥11.5 ≥955 ≥12 302-326 38-41 -0.12 -0.75 80
N42 1.28-1.32 12.8-13.2 ≥860 ≥11.5 ≥955 ≥12 318-342 40-43 -0.12 -0.75 80
N45 1.32-1.37 13.2-13.7 ≥860 ≥11.0 ≥955 ≥12 342-366 43-46 -0.12 -0.75 80
N48 1.37-1.42 13.7-14.2 ≥836 ≥11.0 ≥955 ≥12 366-390 46-49 -0.12 -0.75 80
N50 1.39-1.44 13.9-14.4 ≥836 ≥10.5 ≥955 ≥12 376-408 47-51 -0.12 -0.75 80
N52 1.42-1.47 14.2-14.7 ≥836 ≥10.5 ≥876 ≥11 390-421 49-53 -0.12 -0.75 80
N55 1.45-1.50 14.5-15.0 ≥836 ≥10.5 ≥876 ≥11 406-438 51-55 -0.12 -0.75 80
N35M 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥1114 ≥14 263-287 33-36 -0.11 -0.675 100
N38M 1.22-1.25 12.2-12.5 ≥899 ≥11.3 ≥1114 ≥14 287-310 36-39 -0.11 -0.675 100
N40M 1.25-1.28 12.5-12.8 ≥923 ≥11.6 ≥1114 ≥14 302-326 38-41 -0.11 -0.675 100
N42M 1.28-1.32 12.8-13.2 ≥955 ≥12.0 ≥1114 ≥14 318-342 40-43 -0.11 -0.675 100
N45M 1.32-1.38 13.2-13.8 ≥971 ≥12.2 ≥1114 ≥14 342-366 43-46 -0.11 -0.675 100
N48M 1.36-1.42 13.6-14.2 ≥995 ≥12.5 ≥1114 ≥14 360-392 46-49 -0.11 -0.675 100
N50M 1.39-1.44 13.9-14.4 ≥1035 ≥13.0 ≥1114 ≥14 376-406 47-51 -0.11 -0.675 100
N52M 1.42-1.47 14.2-14.7 ≥1056 ≥13.3 ≥1114 ≥14 390-422 49-53 -0.11 -0.675 100
N35H 1.17-1.22 11.7-12.2 ≥868 ≥10.9 ≥1353 ≥17 263-287 33-36 -0.11 -0.605 120
N38H 1.22-1.25 12.2-12.5 ≥899 ≥11.3 ≥1353 ≥17 287-310 36-39 -0.11 -0.605 120
N40H 1.25-1.28 12.5-12.8 ≥923 ≥11.6 ≥1353 ≥17 302-326 38-41 -0.11 -0.605 120
N42H 1.28-1.32 12.8-13.2 ≥955 ≥12.0 ≥1353 ≥17 318-342 40-43 -0.11 -0.605 120
N45H 1.32-1.37 13.2-13.7 ≥971 ≥12.2 ≥1353 ≥17 344-366 43-46 -0.11 -0.605 120
N48H 1.36-1.42 13.6-14.2 ≥1011 ≥12.7 ≥1353 ≥17 366-392 46-49 -0.11 -0.605 120
N50H 1.39-1.44 13.9-14.4 ≥1035 ≥13.0 ≥1353 ≥17 374-406 47-51 -0.11 -0.605 120
N52H 1.42-1.47 14.2-14.7 ≥1035 ≥13.0 ≥1353 ≥17 390-422 49-53 -0.11 -0.605 120
N33SH 1.13-1.17 11.3-11.7 ≥844 ≥10.6 ≥1592 ≥20 247-272 31-34 -0.11 -0.535 150
N35SH 1.17-1.22 11.7-12.2 ≥876 ≥11.0 ≥1592 ≥20 263-287 33-36 -0.11 -0.535 150
N38SH 1.22-1.25 12.2-12.5 ≥907 ≥11.4 ≥1592 ≥20 287-310 36-39 -0.11 -0.535 150
N40SH 1.25-1.28 12.5-12.8 ≥939 ≥11.8 ≥1592 ≥20 302-326 38-41 -0.11 -0.535 150
N42SH 1.28-1.32 12.8-13.2 ≥955 ≥12.0 ≥1592 ≥20 318-342 40-43 -0.11 -0.535 150
N45SH 1.32-1.37 13.2-13.7 ≥979 ≥12.3 ≥1592 ≥20 342-366 43-46 -0.11 -0.535 150
N48SH 1.36-1.42 13.6-14.2 ≥995 ≥12.5 ≥1592 ≥20 366-390 45-49 -0.11 -0.535 150
N50SH 1.39-1.45 13.9-14.5 ≥995 ≥12.5 ≥1592 ≥20 374-406 45-49 -0.11 -0.535 150
N52SH 1.42-1.47 14.2-14.7 ≥995 ≥12.5 ≥1592 ≥20 390-422 49-53 -0.11 -0.535 150
N30UH 1.08-1.13 10.8-11.3 ≥812 ≥10.2 ≥1990 ≥25 223-247 28-31 -0.1 -0.465 180
N33UH 1.13-1.17 11.3-11.7 ≥852 ≥10.7 ≥1990 ≥25 247-271 31-34 -0.1 -0.465 180
N35UH 1.17-1.22 11.7-12.2 ≥860 ≥10.8 ≥1990 ≥25 263-287 33-36 -0.1 -0.465 180
N38UH 1.22-1.25 12.2-12.5 ≥876 ≥11.0 ≥1990 ≥25 287-310 36-39 -0.1 -0.465 180
N40UH 1.25-1.28 12.5-12.8 ≥915 ≥11.5 ≥1990 ≥25 302-326 38-41 -0.1 -0.465 180
N42UH 1.27-1.32 12.7-13.2 ≥955 ≥12.0 ≥1990 ≥25 318-342 40-43 -0.1 -0.465 180
N45UH 1.32-1.37 13.2-13.7 ≥995 ≥12.5 ≥1990 ≥25 342-366 43-46 -0.1 -0.465 180
N48UH 1.37-1.43 13.7-14.3 ≥995 ≥12.5 ≥1990 ≥25 366-390 46-49 -0.1 -0.465 180
N50UH 1.39-1.45 13.9-14.5 ≥995 ≥12.5 ≥1990 ≥25 374-406 47-51 -0.1 -0.465 180
N30EH 1.08-1.13 10.8-11.3 ≥812 ≥10.2 ≥2388 ≥30 223-247 28-31 -0.1 -0.42 200
N33EH 1.13-1.17 11.3-11.7 ≥820 ≥10.3 ≥2388 ≥30 248-272 31-34 -0.1 -0.42 200
N35EH 1.17-1.22 11.7-12.2 ≥836 ≥10.5 ≥2388 ≥30 263-287 33-36 -0.1 -0.42 200
N38EH 1.20-1.25 12.0-12.5 ≥899 ≥11.3 ≥2388 ≥30 287-310 36-39 -0.1 -0.42 200
N40EH 1.25-1.28 12.5-12.8 ≥915 ≥11.5 ≥2388 ≥30 302-326 38-41 -0.1 -0.42 200
N42EH 1.27-1.32 12.7-13.2 ≥971 ≥12.2 ≥2388 ≥30 318-342 40-43 -0.1 -0.42 200
N45EH 1.33-1.38 13.3-13.8 ≥971 ≥12.2 ≥2388 ≥30 342-366 43-46 -0.1 -0.42 200
N28AH 1.05-1.09 10.5-10.9 ≥780 ≥9.8 ≥2706 ≥34 207-230 26-29 -0.1 -0.393 220
N30AH 1.10-1.14 11.0-11.4 ≥812 ≥10.2 ≥2706 ≥34 223-247 28-31 -0.1 -0.393 220
N33AH 1.14-1.17 11.4-11.7 ≥812 ≥10.2 ≥2706 ≥34 247-271 31-34 -0.1 -0.393 220
N35AH 1.17-1.22 11.7-12.2 ≥883 ≥11.1 ≥2706 ≥34 263-287 33-36 -0.1 -0.393 220
N38AH 1.20-1.25 12.0-12.5 ≥923 ≥11.6 ≥2706 ≥34 287-310 36-39 -0.1 -0.393 220
N40AH 1.25-1.30 12.5-13.0 ≥923 ≥11.6 ≥2706 ≥34 302-326 38-41 -0.1 -0.393 220
N42AH 1.28-1.34 12.8-13.4 ≥923 ≥11.6 ≥2706 ≥34 318-342 40-43 -0.1 -0.393 220
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