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Permanent magnet specification

 
牌号		  
性能		 剩磁Br 磁感矫顽力Hcb 内禀矫顽力Hcj 最大磁能积（BH）max 最高工作温度
°C
KGs T KOe KA/m KOe KA/m MGOe KJ/m³
Min Max Min Max Min Max Min Max
 
 
 
 
N		 N58 ≥14.8 - ≥1.48 - ≥10.5 ≥836 ≥11 ≥875 51 55 446 478 ≤80
N56 ≥14.6 - ≥1.46 - ≥10.5 ≥836 ≥11 ≥875 51 55 430 462 ≤80
N54 14.5 14.8 1.45 1.48 ≥10.5 ≥836 ≥11 ≥875 51 55 406 438 ≤70
N52 14.2 14.5 1.42 1.45 ≥10.5 ≥836 ≥12 ≥960 49 53 390 422 ≤80
N50 14.0 14.5 1.40 1.45 ≥10.5 ≥836 ≥12 ≥960 47 51 374 406 ≤80
N48 13.7 14.2 1.37 1.42 ≥10.5 ≥836 ≥12 ≥960 45 49 358 390 ≤80
N45 13.3 13.8 1.33 1.38 ≥10.8 ≥860 ≥12 ≥960 43 46 342 366 ≤80
N42 12.9 13.4 1.29 1.34 ≥10.8 ≥860 ≥12 ≥960 40 43 318 342 ≤80
N40 12.6 13.1 1.26 1.31 ≥10.8 ≥860 ≥12 ≥960 38 41 302 326 ≤80
N38 12.3 12.7 1.23 1.27 ≥10.8 ≥860 ≥12 ≥960 36 39 287 310 ≤80
N35 11.8 12.3 1.18 1.23 ≥10.8 ≥860 ≥12 ≥960 33 36 263 287 ≤80
N33 11.4 11.8 1.14 1.18 ≥10.3 ≥816 ≥12 ≥960 31 33 247 263 ≤80
N30 10.8 11.4 1.08 1.14 ≥9.5 ≥756 ≥12 ≥960 28 31 223 247 ≤80
 
 
 
 
M		 N56M 14.6 - 1.46 - ≥13.3 ≥1059 ≥14 ≥1114 51 55 416 446 ≤100
N54M 14.5 14.8 1.45 1.48 ≥12.5 ≥995 ≥14 ≥1035 51 54 406 438 ≤100
N52M 14.2 14.8 1.42 1.48 ≥12.5 ≥995 ≥13 ≥1035 49 53 390 422 ≤100
N50M 13.9 14.5 1.39 1.45 ≥13.0 ≥1035 ≥14 ≥1114 47 51 374 406 ≤100
N48M 13.7 14.2 1.37 1.42 ≥12.7 ≥1012 ≥14 ≥1114 45 49 358 390 ≤100
N45M 13.3 13.8 1.33 1.38 ≥12.2 ≥971 ≥14 ≥1114 43 46 342 366 ≤100
N42M 12.9 13.4 1.29 1.34 ≥11.8 ≥938 ≥14 ≥1114 40 43 318 342 ≤100
N40M 12.6 13.1 1.26 1.31 ≥11.4 ≥910 ≥14 ≥1114 38 41 302 326 ≤100
N38M 12.3 12.6 1.23 1.26 ≥11.0 ≥876 ≥14 ≥1114 36 39 287 310 ≤100
N35M 11.8 12.3 1.18 1.23 ≥10.8 ≥860 ≥14 ≥1114 33 36 263 287 ≤100
N33M 14.4 14.8 1.44 1.48 ≥10.3 ≥816 ≥14 ≥1114 28 31 223 247 ≤100
 
 
 
H		 N54H 14.4 14.8 1.44 1.48 ≥13.4 ≥1092 ≥17 ≥1274 50 54 398 430 ≤120
N52H 14.2 14.5 1.42 1.45 ≥13.4 ≥1066 ≥17 ≥1073 49 53 390 422 ≤120
N50H 13.9 14.5 1.39 1.45 ≥13.0 ≥1035 ≥16 ≥1274 47 51 374 406 ≤120
N48H 13.7 14.2 1.37 1.42 ≥12.8 ≥1000 ≥16 ≥1274 45 49 358 390 ≤120
N45H 13.3 13.8 1.33 1.38 ≥12.5 ≥995 ≥17 ≥1353 43 46 342 366 ≤120
N42H 12.9 13.4 1.29 1.34 ≥12.0 ≥957 ≥17 ≥1353 40 43 318 342 ≤120
N40H 12.6 13.1 1.26 1.31 ≥11.7 ≥930 ≥17 ≥1353 38 41 302 326 ≤120
N38H 12.3 12.6 1.23 1.26 ≥11.4 ≥910 ≥17 ≥1353 36 39 287 310 ≤120
N35H 11.8 12.3 1.18 1.23 ≥11.0 ≥876 ≥17 ≥1353 33 36 263 287 ≤120
N33H 11.4 11.8 1.14 1.18 ≥10.6 ≥844 ≥17 ≥1353 31 34 247 271 ≤120
 
 
 
SH		 N48SH 13.7 14.2 1.37 1.42 ≥12.8 ≥1035 ≥19 ≥1512 45 49 358 390 ≤150
N45SH 13.3 13.8 1.33 1.38 ≥11.8 ≥938 ≥20 ≥1592 43 46 342 366 ≤150
N42SH 12.9 13.4 1.29 1.34 ≥11.8 ≥938 ≥20 ≥1592 40 43 318 342 ≤150
N40SH 12.6 13.1 1.26 1.31 ≥11.5 ≥912 ≥20 ≥1592 38 41 302 326 ≤150
N38SH 12.3 12.6 1.23 1.26 ≥11.1 ≥886 ≥20 ≥1592 36 39 287 310 ≤150
N35SH 11.8 12.3 1.18 1.23 ≥11.0 ≥876 ≥20 ≥1592 33 36 263 287 ≤150
N33SH 11.4 11.8 1.14 1.18 ≥10.5 ≥836 ≥20 ≥1592 31 34 247 271 ≤150
 
 
UH		 N45UH 13.3 13.7 1.33 1.37 ≥12.2 ≥976 ≥24 ≥1911 43 46 342 366 ≤170
N42UH 12.8 13.3 1.28 1.33 ≥11.8 ≥938 ≥25 ≥1990 40 43 318 342 ≤180
N40UH 12.5 12.9 1.25 1.29 ≥11.5 ≥912 ≥25 ≥1990 38 41 302 326 ≤180
N38UH 12.2 12.6 1.22 1.26 ≥11.1 ≥886 ≥25 ≥1990 36 39 287 310 ≤180
N35UH 11.8 12.3 1.18 1.23 ≥10.6 ≥845 ≥25 ≥1990 33 36 263 287 ≤180
N33UH 11.4 11.8 1.14 1.18 ≥10.3 ≥816 ≥25 ≥1990 31 34 247 271 ≤180
N30UH 10.8 11.4 1.08 1.14 ≥9.5 ≥756 ≥25 ≥1990 28 31 223 247 ≤180
 
EH		 N42EH 12.8 13.3 1.28 1.33 ≥12.2 ≥971 ≥29 ≥2308 39 43 310 342 ≤190
N40EH 12.5 12.9 1.25 1.29 ≥11.9 ≥947 ≥30 ≥2388 37 41 295 326 ≤200
N38EH 12.2 12.6 1.22 1.26 ≥11.6 ≥923 ≥30 ≥2388 35 39 279 310 ≤200
N35EH 11.8 12.3 1.18 1.23 ≥11.1 ≥883 ≥30 ≥2388 33 35 263 287 ≤200
N33EH 11.4 11.8 1.14 1.18 ≥10.3 ≥816 ≥30 ≥2388 31 34 247 271 ≤200
N30EH 10.8 11.4 1.08 1.14 ≥9.5 ≥756 ≥30 ≥2388 28 31 223 247 ≤200
N28EH 10.5 10.8 1.05 1.08 ≥9.5 ≥756 ≥30 ≥2388 26 29 207 231 ≤200
 
AH		 N38AH 12.2 12.6 1.22 1.26 ≥11.6 ≥923 ≥33 ≥2627 35 39 279 310 ≤210
N35AH 11.8 12.3 1.18 1.23 ≥10.6 ≥845 ≥35 ≥2786 33 36 263 287 ≤230
N33AH 11.4 11.8 1.14 1.18 ≥10.2 ≥816 ≥35 ≥2786 31 34 247 271 ≤230
N30AH 10.8 11.4 1.08 1.14 ≥10.1 ≥804 ≥35 ≥2786 28 31 223 247 ≤230
N28AH 10.5 10.8 1.05 10.8 ≥9.5 ≥756 ≥35 ≥2786 26 29 207 231 ≤230

Magnetizing method

magnetization_method

Magnetic calculation

Surface Gaussian ComputingMagnetic Tension Calculation:Magnetic Moment Calculation

Special note:

  • based on the Law of biot-savart, the surface magnetic calculator is suitable for calculating the uncoated surface magnetic field of the magnetized surface centroid or above, unchamfered sintered NdFeB magnet and sintered SmCo magnet.
  • The calculation results are for reference only.
  • The surface magnetic value decreases with the increase of air gap, so the packaging method gauss meter in Hall element and other neglected air gaps will significantly affect the accuracy of surface magnetic measurement. Therefore, it is recommended to set the air gap size in the surface magnetic calculator in the range of 0.3-0.5mm.
  • Even if the measuring point is located at centroid, the reproducibility of surface magnetic measurement is still relatively poor. It must be noted that compared with magnetic flux or magnetic moment, the surface magnetic field does not reflect the overall performance of the magnet.
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Cylindrical magnet

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Block magnet

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Cylindrical magnet

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Block magnet

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Cylindrical magnet

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Block magnet

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tube magnet