Item No.: Y28-Ferrite-5
Magnet Shape: rod, Cylinder
Material: Hard Ferrite (Ceramic)
Composite: Fe2O3 (BaCo3 or SrO3), Fe3O4 (SrCo3, SiO2)
Type: anisotropic or isotropic
Style: Sintered Permanent Magnet
Grade(Chinese Stardard): Y28
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 3.7-4.0 KGs (mT): 370-400 mT
Intrinsic Coercivity Force (Hcj): 2.20-3.64 KOe 175-210 KA/m
Coercivity Force (Hcb): 2.26-2.76 KOe 180-220 KA/m
Energy Density (BH)max: 3.3-3.8 MGOe 26.0-30.0 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
•Density - 0.180 lbs per cubic inch
•Saturation magnetizing field required - about 10kOe
•Manufacturing methods - sintering (most common), injection molding, extruding or calendering - the last 3 methods when the material is combined with a carrier. Fully dense sintered Ferrite magnets can be wet or dry pressed - wet pressing leads to higher magnetic properties.
•Shapes available - blocks, bars, discs, rings, arc segments, etc.
•Grades available - from 0103 to 0404. (First 2 digits represent BHmax, and second two digits represent Intrinsic Coercivity, Hci.)
•Sizes - sintered ferrites can be manufactured in blocks up to about 10" x 4" x 1". Extruded Ferrite (otherwise known as Flexible magnets) can be extruded in unlimited lengths. The energy product of Flexible magnets is, however, much lower than that of fully dense, sintered Ferrite magnets.
Surface Treatments
No surface treatments are necessary for Ferrite magnets since they are essentially inert and do not oxidize. However, they can be coated with various epoxy coatings for cleanliness purposes.
