EAM Hard
Ferrite / Ceramic Magnets — For All Applications...
Hard Ferrite or Ceramic magnets are the
most popular permanent magnets available today. They are
made form a combination of either Barium or Strontium
Ferrite and Iron Oxide, and exhibit a high degree of
coercive strength, making them more resistant to
demagnetization. They are a low-cost solution to an endless
list of magnetic applications.
Hard Ferrite/Ceramic magnets can be produced with either
isotropic or anisotropic properties. The most common grades
are C1, C5, and C8. C1 material exhibits the lowest energy
product, however it is isotropic – indicating that it can be
magnetized in any direction. It should be noted that
slightly more magnetic strength will be realized when parts
are magnetized through the pressing (usually the shortest)
dimension.
Grades 5 and 8 Ceramic materials are anisotropic, and must
therefore be magnetized in the manufactured dimension. They
exhibit high levels of magnetic force than do Ceramic 1
materials.
Hard Ferrite magnets have excellent corrosion resistance and
have normal operating capabilities between -40°C and +250°C.
. At very low temperatures there is a risk of permanent
demagnetization in magnet systems with low working points.
