Ferrite (Ceramic) & Flexible Materials Properties

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Ferrite (Ceramic) & Flexible Materials Properties









 
Ferrite (Ceramic) - Magnetic Properties
Grade Type Br
(kGauss)
Hc
(kOersteds)
Hci
(kOersteds)
BHmax
(MGOe)
Temperature
Coefficients (%/°C)
of Br of Hci
F1132 Fully Dense 2.20 1.90 3.25 1.1 -0.18 0.2
F3624 Fully Dense 3.95 2.40 2.45 3.6 -0.18 0.2
F3532 Fully Dense 3.90 3.20 3.25 3.5 -0.18 0.2
F4450 Fully Dense 4.30 4.15 5.00 4.4 -0.18 0.2
Flex 0.6 Flexible 1.72 1.32 1.34 0.6 -0.18 0.2
Flex 1.1 Flexible 2.20 2.00 2.40 1.1 -0.18 0.2
Flex 1.4 Flexible 2.45 2.20 2.40 1.4 -0.18 0.2
Flex 1.6 Flexible 2.65 2.20 2.40 1.6 -0.18 0.2

Note: Magnetic properties of fully dense ferrite materials degrade linearly with temperature. At 350° F, about 75% of room temperature magnetization is retained, and at 550° F, about 50% is retained. The maximum operating temperature for flexible ferrite materials is governed by the carrier; this is normally a vinyl compound and does not allow the material to operate above about 240° F.

Ferrite (Ceramic) - Physical Properties
Type Density Bending Strength Compressive Strength Electrical
Resistivity (Ωm)
Coeff. Of Thermal Expansion1 Curie Temperature
(kg/m3) (lbs/in3) (kg/m2) (lbs/in2) (kg/m2) (lbs/in2) // M ”´M (°C) (°F)
Fully Dense 4.9 x 103 0.180 1.4 x 103 2.0 x 104 9.1 x 103 1.3 x 105 1 x 108 1.4 x 10-5 1 x 10-5 450 840
Flexible 3.8 x 103 0.140               450 840

1 // M Parallel to magnetic orientation, ”´M Perpendicular to magnetic orientation.

 
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