Application Notes

We provide assistance to select the suitable magnet for your sensor application. Please take a look at our overview of prime magnet materials available.

 

Material Grades

Remanence
Coercivity
Energy Product
Operating 
Temperature
Br
HcB
HcJ
(BH) max.
max.
mT
kA/m
kA/m
kJ/m3
°C


NdFeB

N30
1105
836
955
235
80
N30H
1105
836
1274
235
120
N30SH
1100
836
1512
239
150
N33EH
1185
828
955
275
180
N35
1185
828
955
275
80
N35H
1190
828
1274
275
120
N35SH
1190
828
1512
275
150
N40SH
1260
844
1512
314
150
N45
1350
840
955
354
80


SmCo5
S20
875
617
1194
159
250
Sm2Co17
S24H
975
724
1433
183
300
S28H
1065
724
1433
215
300


AlNiCo
A500
1281
50
52
40
500


Ferrit
Y10
215
143
203
8
250
Y30BH
390
229
231
29
300
Y35
410
183
167
31
300


Bonded Ferrit
FB1
240
171
225
11
80


Bonded NdFeB
BN8
575
378
1035
64
150

 

 

Magnet Glossary

 

Anisotropic

Magnet material having a preferred direction of magnetic orientation

Bonded Magnets

Magnet powders mixed with polymer carrier; mechanical properties reach from elastic to hard; penalty of bonded material is a "weaker magnet" compared to non-bonded material

Coercivity Hc [kA/m]

Demagnetizing force necessary to reduce polarisation J (HcJ) or induction B (HcB) to zero

Curie Temperature

Temperature at which a magnet is totally demagnetized

Energy Product BH max [kJ/m3]

Point on the second quadrant of the hysteresis loop at which the product of induction B and magnetizing force H reaches a maximum; describes the "strength" of magnet material

Gauss

Unit of magnetic flux density in the CGS system (1 Gauss = 10-4 Tesla)

Isotropic

Magnet material with no preferred orientation; can be magnetized in any direction

Magnet Pole

"Output" of the magnetic flux

Oersted

Unit of magnetizing force in the CGS system (1 Oersted = 0.0796 kA/m)

Remanence Br [mT]

Residual induction in magnet material after being magnetized to saturation

Tesla

Unit of magnetic flux density in the SI system (1mT = 10 Gauss)