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Ceramic 8 magnet ferrite ring magnet ferrite ring speaker magnet

Ceramic 8 magnet ferrite ring magnet ferrite ring speaker magnet

Hard Anisotropic Ferrite Magnet

Ceramic magnets (also known as "ferrite" magnets) are part of the permanent magnet family and are currently the lowest cost hard magnets.

The ceramic (ferrite) magnet composed of strontium carbonate and iron oxide has medium strength and can be used at quite high temperature.

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Product Detail

Physical Properties of Anisotropic Ferrite Magnet

Density	4.8 ~ 5.1 g/cm³
Electrical Resistivity	>=10(4) Ω.cm
Recoil Permeablility	1.05 ~ 1.03
Curie Temperature	460 ~ 480℃
Temperature Coefficient of Br	-0.18 ~ -0.2 % / ℃ ( 0-100℃)
Temperature Coefficient of Hc	0.2 ~ 0.5 % / ℃( 0-100℃)
Coefficient Of Linear Expansion	7 ~ 15 X 10(-6) /℃

Applications
Fan Motors
Wiper Motors
EPS Motors
Starter Motors
Home appliance Motors
Industrial Motors
Motorcycle Motors
other DC Motors

Process of Ferrite Magnet manufacturing

Raw Material--Mixing / Milling--Calcination--Coarse Milling--Wet Milling--Pressing--Sintering--Grinding&Finishing--Final Inspection--Packing and Dispatch

Advantages of Ferrite Permanent Magnets
Do not corrode in water.
Can be used up to ﹢250 degrees C.
Sometimes up to +300 degrees C in special circumstances.
High coercivity (Hci) that increases as magnet heats up.
Electrically insulating.
Low cost.