Magnetisation Grade:         N42M
Material: Neodymium-Iron-Boron (NdFeB), Neodymium and Steel 
Magnet ID:              NCS-40-N42M-Ni
Plating / Coating:  Nickel (Ni-Cu-Ni) / Double Ni / Zinc (Zn) / Epoxy        
Shape:         Segment / Arc / Tile with Countersunk (countersink)   
Segment Countersunk Magnet Size:  Customized According to your design drawings.
Tolerance:         ±0.05 mm
Magnetisation Direction:    Axial  /  Radial   
Residual Magnetic Flux Density (Br): 1280-1320 mT (12.8-13.2 kGs)
Energy Density (BH)max:             318-342 KJ/m³  (40-43 MGOe) 
Coercivity Force (Hcb):              ≥ 955 kA/m ( ≥ 12.0 kOe)  
Intrinsic Coercivity Force (Hcj):    ≥ 1114  kA/m ( ≥ 14 kOe)   
Maximum Operation Temperature: 100 °C 
Delivery Time:           14-35 days   
Surface treatments have been developed that allow them to be used in most applications. The treatments include Ni, Ni-Cu-Ni, Zn, Ag, Au and other special plating. They are good at anticorrosion.
7. Customized Neodymium Magnets
Most of our magnets are customized. They are produced for customers' specific using, like arc, tile, square, cylinder and magnetic ring with various sizes. Common specification samples will be available in stock for your testing first.
8. Applications
Security systems, Magnetic separators, Magnetic resonance imaging, Health bandages and plasters, Specialty door catches, Filters & strainers, Sensors, Speakers, Microphones/earphones, High performance motors, Brushless motors, Micro motor, servo motors, VCM(voice coil motor), Automobiles, Magnetic couplings, Magnetic Chucks, Magnetic toys, Magnetic tools, Other magnetic applications
9.Performance of Neodymium magnets