Least expensive material compared to alnico and rare earth magnets
High intrinsic coercive force
Available in simple shapes only due to manufacturing process
Lower service temperature than alnico, greater than rare earth
Finishing requires diamond cutting or grinding wheel
Lower energy product than alnico and rare earth magnets
Most common grades of ceramic are 1, 5 and 8 (1-8 possible)
Grade 8 is the strongest ceramic material available
Injection plastic-bonded magnet is a new kind of composite permanent-magnetic material with features of flexible shaping, dimensional precision, adjustable magnetic properties, fine coherence, composite molding, elastic magnetization and high mechanical strength.
Injection plastic-bonded magnets are now widely applied to core components and parts of micro machine, location sensors, buzzer, contactless distributor for automotive and home appliance industry.