Sintered NdFeB - Neodymium Iron Boron
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SM Magnetics
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Pelham, AL 35124205.621.8841
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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 |