Item No.: C11-Ceramic-4  
Magnet Shape: disc / disk          
Material: Hard Ferrite (Ceramic)
Composite:      Fe2O3 (BaCo3 or SrO3), Fe3O4 (SrCo3, SiO2) 
Type: anisotropic or isotropic
Style:         Sintered Permanent Magnet
Grade(USA Stardard):         C11
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 4.30 KGs (mT):  430 mT
Intrinsic Coercivity Force (Hcj):    2.51 KOe    200 KA/m
Coercivity Force (Hcb):              2.56 KOe    204 KA/m
Energy Density (BH)max:              4.32 MGOe   34.4 KJ/m³
Operating Temperature:               -40 °C to +250 °C
Magnetisation Direction: Axial / Radially magnetized
Size Can be customized according to customer drawings:
Tolerance:         +/-2% mm
Delivery time           7-25 days
Ceramic Magnets
Viona Ceramic Magnets
General Information
Ceramic (Ferrite) magnets are sintered permanent magnets composed of Barium or Strontium Ferrite. This class of magnets, aside from good resistance to demagnetization, has the popular advantage of low cost.
Ferrite magnets are very hard and brittle, and require specialized machining techniques. Moreover, they should be machined in an unmagnetized state. We are equipped to machine these materials to specifications.
Anisotropic grades are oriented in the manufacturing direction, and must be magnetized in the direction of orientation. Isotropic grades are not oriented and can be magnetized in any direction, although some degree of greater magnetic strength will be found in the pressing dimension, usually the shortest dimension.
Due to their low cost, Ferrite magnets enjoy a very wide range of applications, from motors and loudspeakers to toys and crafts, and are the most widely used permanent magnets today.