Materials Services | Materials Germany Hard ferrite magnets Product information Hard ferrite magnets are the most cost effective and widely used of all magnetic materials. Both isotropic and anisotropic magnets can be produced in hard ferrite. Anisotropic hard ferrite magnets have an energy density which is 300 % higher than isotropic magnets. Magnet shapes In principle all shapes can be produced by mold pressing: rods, bar magnets, blocks, ring magnets and other shapes. Sharp edges and corners have to be avoided as the high brittleness level of the material can cause cracks and fractures. Drill holes and grooves can only be applied in the direction of pressing, because the preferred direction is usually parallel to it. Indirect shaping is also possible. This is usually achieved by cutting from large sintered blocks (mainly for small magnets). Delivery program Our range comprises a wide selection of various hard ferrite materials with differing magnetic properties. They permit material selection tailored to individual application requirements. We look forward to advising you in detail. Content    01 Short introduction Magnet shapes Delivery program 02 Magnetic properties Demagnetizing curves 03 Physical properties Chemical resistance Production Temperature behavior 04 Toxicit

Materials Services | Materials Germany | Product information Hard ferrite magnets Magnetic properties Remanent magnetization Temperature coefficient Energy product Selected material qualities (according EN 60404-8-1:2015). Further qualities on request. a = anisotropic; i = isotropic The magnetizing field strength is at least three times the HcJ value. The relative permeability (µ p) is between 1.05–1.10. Demagnetizing curves BHmax [kJ/m3] 500 Demagnetizing curves of selected hard ferrite material qualities

Materials Services | Materials Germany | Product information Hard ferrite magnets Physical properties Coefficient of linear thermal expansion Raw material Hard ferrite Young’s modulus Compressive Vickers strength hardness Electrical resistivity Heat capacity in magnetizing normal to mag. Thermal direction conductivity direction Operating temperature Tmax = 250 °C Curie temperature Tc = 450 °C Chemical resistance Permanent ferrite magnets are to a great extent chemical resis tant. They are also resistant to oxidation and climatic influences. In particular to weak organic acids like water, petrol,...

Materials Services | Materials Germany | Product information Hard ferrite magnets Toxicity Ferrite magnets are non-toxic and environment friendly when disposed off on landfills. errite magnets are unaffected by incineration. Even direct contact with foodstuffs is harmless. Acco ding to foodstuff legislation, di ect and continuous contact between ferrite materials and potable water is permitted. General note The statements are in no way to be deemed as an advisory service of our company, but are only descriptive without guaranteeing or granting property-related qualities. Liability on the basis...