Magnet Shape: Disc / Disk / Round
Material: Hard Ferrite (Ceramic)
Coating: No Coating
Grade(Chinese Stardard): Y30
Detailed magnetic properties data:
Residual Magnetic Flux Density (Br): 3.8-4.0 KGs (mT): 380-400 mT
Intrinsic Coercivity Force (Hcj): 2.89-3.46 KOe 230-275 KA/m
Coercivity Force (Hcb): 2.95-3.64 KOe 235-290 KA/m
Energy Density (BH)max: 3.3-3.8 MGOe 27.0-32.5 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): 30 mm
Thickness(T): 3 mm
Tolerance: +/-2% mm
Delivery time 7-25 days
Measurements
Ceramic (hard ferrite) ring magnets are among the most economical magnets available, and are commonly used in manufacturing, craft and hobby applications.
Ceramic rings offer economical magnet power for price sensitive applications when you need low cost, good holding strength and great value.
Ceramic ring 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 ring magnets in Grade 5, magnetized through the thickness. Grade 8 is also available by request; that is generally used in more demanding technical applications.
For a comparison of Ceramic Grades 5 & 8, please see our Chart of Properties.