Magnet Shape: Disc / Disk / Round
Material: Hard Ferrite (Ceramic)
Coating: No Coating
Grade(Chinese Stardard):         Y30BH

Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 3.8-3.9 KGs (mT):  380-390 mT
Intrinsic Coercivity Force (Hcj):    2.80-2.95 KOe    223-235 KA/m
Coercivity Force (Hcb):              2.90-3.08 KOe    231-245 KA/m
Energy Density (BH)max:              3.4-3.7 MGOe     27.0-30.0 KJ/m³
Operating Temperature:               -40 °C to +250 °C
Magnetisation Direction: Axial / Radially magnetized
Size (Can be customized according to customer drawings):
Outside Diameter(D):  8 mm
Thickness(T):            2 mm
Tolerance:         +/-2% mm
Delivery time           7-25 days
Measurements

Ceramic (hard ferrite) block magnets are among the most economical magnets available, and are commonly used in separation, holding, sweepers, as well as many other applications.
Ceramic DISC Features
Ceramic DISC magnets offer economical magnet power for price sensitive applications when you need low cost, good holding strength and great value.
Ceramic DISC magnets are a dark charcoal grey in color, and do not appear metallic.
Ceramic magnets are not suited for high temperature applications (over 250° C)
We stock ceramic DISC magnets in Grade 8, magnetized through the thickness.
For a comparison of Ceramic Grades 5 & 8, please see our Chart of Properties.