Item No.: Y20-Ferrite-2
Magnet Shape: Ring / Tube
Material: Hard Ferrite (Ceramic)
Composite: Fe2O3 (BaCo3 or SrO3), Fe3O4 (SrCo3, SiO2)
Type: anisotropic or isotropic
Style: Sintered Permanent Magnet
Grade(China Stardard): Y20
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 3.2-3.8 KGs (mT): 320-380 mT
Intrinsic Coercivity Force (Hcj): 1.70-2.38 KOe 135-190 KA/m
Coercivity Force (Hcb): 1.76-2.45 KOe 280-320 KA/m
Energy Density (BH)max: 2.0-2.8 MGOe 18.0-22.0 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
Ring magnets of ferrite are used for the construction of speakers, for example, or to build self-made levitation magnets. They help picking needles or screws out of garbage or have their places in analytic systems. Rings are mostly magnetised through their thickness.
Quite large ring magnet of ferrite, magnetised in highest possible grade of magnetisation (Y35) through its thickness. Ferrite magnets consist of hard ferrite, which belongs to the group of ceramic material. As such they are extremely hard and brittle. Ferrites are heat-resistant up to approx. 250°C (if not painted), are non-toxic, value to money and most prevalent type of permanent magnets worldwide.
