Magnet Shape: Ring with Cylindrical Borehole (Hole)
Material: Sintered Hard Ferrite (Ceramic) and Steel
Coating: nickle        
Grade(Chinese Stardard):         Y32
Magnet ID:              FPCB-20-Y32-Ni  
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 4.0-4.2 KGs (mT):  400-420 mT
Intrinsic Coercivity Force (Hcj):    2.01-2.37 KOe    160-190 KA/m
Coercivity Force (Hcb):              2.07-2.45 KOe    165-195 KA/m
Energy Density (BH)max:              3.4-4.0 MGOe     30.0-33.5 KJ/m³
Operating Temperature:               -40 °C to +250 °C
Magnetisation Direction: Axial / Radially magnetized
Pot Magnet Size:
Pot Diameter (D):  20 mm
Pot Height (H):    5.2 mm
Borehole  (d1):    3,7 mm
Borehole  (d2):    6,7 mm
Depth      (t):    4 mm
Tolerance:         +/-2% mm
Delivery time           7-25 days
Measurements

1) Cheapest magnet material
2) Good anti-corrosion performance, no surface treatment needed.
3) Excellent temperature stability
4) Best choice for industrial application
5) All shapes can be customized
6) Compact crystal
7) provide isotropic and anisotrpic

Ferrite Magnets
Our company has been widely acclaimed for providing our clients with this extensive range of Ferrite Magnets that has been extensively composed of best quality iron and barium or strontium oxides. The offered magnet is hard in composition and can be easily categorized by high normal & intrinsic coercive force. In addition to this a rather low residual induction and are virtually free from the effects of a self-demagnetization. Offering a corrosion free ferrite, it is also used for treatments as it posses a comparatively high electric resistivity.