Magnet Shape: Disc / Disk / Round
Material: Hard Ferrite (Ceramic)
Coating: No Coating
Grade(Chinese Stardard): Y32
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
Size (Can be customized according to customer drawings):
Outside Diameter(D): 12 mm
Thickness(T): 3 mm
Tolerance: +/-2% mm
Delivery time 7-25 days
Measurements
Outdoor use
Ferrite magnets are very chemical and rust resistant, while neodymium magnets are not suitable for outdoor use.
Brittleness
Ferrite magnets can break into pieces when you repeatedly put a strain on them. Neodymium magnets are very brittle and crack easily, which can lead to injuries of user or bystanders.
Loss of adhesive force
Neither ferrite nor neodymium magnets lose their magnetisation by itself. They can only be demagnetised by external factors like heat or strong external magnetic fields.
Standard tolerances
Neodymium magnets generally have a tolerance of +/- 0,1 mm.
It's more complicated with ferrite magnets: Their height-related standard tolerance is +/- 0,1 mm; their width- and length-related tolerance is 2%, but at least 0,1 mm.
