Table of Properties for
Ferrite Magnets

Magnetic Properties
Physical and Thermal Properties

 

 

 

 



 


Magnetic Properties

Grade
Br (Gauss)
Hc (Oersteds)
Hci (Oersteds)
BHmax (MGOe)
Maximum Operating Temperature (C)
Temperture Coefficient of Br (%/C)
Density (Lb/in3)
1
2,200
1,900
3,250
1.1
300
-0.18
0.18
5
3,950
2,400
2,450
3.6
300
-0.20
0.18
8
3,900
3,200
3,250
3.5
300
-0.20
0.18
10
4,200
2,950
3,050
4.2
300
-0.20
0.18

 

 

 


Physical and Thermal Properties

Property Typical Value
Coefficient of thermal expansion (25C to 450C)
Perpendicular to orientation
10 x 10-6 cm/cm/C
Parallel to orientation
14 x 10-6 cm/cm/C
Thermal conductivity
0.007 cal/cm-secC
Reversible temperature coefficient of residual induction
-0.2% /C
Reversible temperature coefficient of intrinsic coercive force
0.2 to 0.5% /C
Curie temperature
450C
Maximum service temperature* (without metallurgical change)
800C

 

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