High quality permanent magnetic ferrite block ferrite magnet also known as ceramic magnets, were developed in the 1960’s as a low cost alternative to metallic magnets.Ferrite magnets have won wide acceptance due to their excellent corrosion resistant and good resistance to demagnetization. Despite their relatively low energy output, ferrite magnets’ popularity is largely from its low price. It is the first choice for most automotive sensors, MRI machines, DC motors, and magnetic separators. In fact, based on weight,it is the most widely  used permanent magnet available today.

High quality permanent magnetic ferrite block ferrite magnet is a type of permanent magnet that is rectangular in shape and made from ferrite, a ceramic compound composed of iron oxide (Fe2O3) combined with additional metallic elements such as barium (Ba) or strontium (Sr). These magnets are part of the hard ferrite class and are known for their excellent resistance to demagnetization, corrosion resistance, and cost-effectiveness.

High quality permanent magnetic ferrite block ferrite magnets are very hard and brittle. Like all magnetic materials, ferrite magnets should not be used as a structural element in your design. Ferrite magnets are prone to cracking if your application requires regular impact or flexing. Because ferrite magnets offer good corrosion resistance,they do not require an outer coating. In rare instances a thin outer coating is applied simply to protect the material.

Fairly strong magnetic power (Power-Index(1) = 4~5)
Most common used magnet with low cost (Cost-Index(2) = 1~3)
Isotropic & Anisotropic available
Produced by powder metallurgical engineering with chemical composition of Ba/Sr O.6 Fe2O3
Very brittle & relatively hard
Good resistance to demagnetization
Good temperature stability
Oxided to saturation with excellent corrosion resistance.

Service temperature greater than rare earth and lower than alnico Finishing requires diamond cutting or grinding wheel
Energy product lower than alnico and rare earth magnets.

Tolerance L: + 0.6 / – 0.6 mm
Tolerance W: + 0.4 / – 0.4 mm
Tolerance H: + 0.5 / – 0.2 mm