Magnet Shape: Pot with Hook / Eyelet
Material: Sintered Permanent Hard Ferrite (Ceramic) and Steel
Coating: Zinc(Zn) / Nickel(Ni)       
Grade(Chinese Stardard):         Y32
Magnet ID:              FPHK-20-Y32-Zn  
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 4.00-4.20 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
Orientation: Isotropic / Anisotropic
Pot Magnet Size:
Pot diameter D 20 mm
Neck diameter d 8 mm
Pot height H1 6 mm
Total height without hook H2 13 mm
Total height with hook H3 29 mm
Thread M M4
Hook opening width a 4 mm
Hook inside diameter b 5.5 mm
Tolerance:         +/-2% mm
Delivery time           7-25 days

High Quality China Hard Ferrite Magnet
1. high anti-demagnetization
2. high anti-corrosion
3. low cost
Hard ferrite (ceramic) magnets were developed in the 1960's as a low cost alternative to metallic magnets. Even though they exhibit low energy (compared with other permanent magnet materials) and are relatively brittle and hard, ferrite magnets have won wide acceptance due to their good resistance to demagnetization, excellent corrosion resistance and low price per pound. In fact, measured by weight, ferrite represents more than 75 percent of the world magnet consumption. It is the first choice for most types of DC motors, magnetic separators, magnetic resonance imaging and automotive sensors.