| product | smco magnet | aluminium nitride ceramic | alumina ceramic |
character |
high coercive force | high thermal conductivity | good thermal conductivity |
| thermal endurance | low dielectric constant | high mechanical strength | |
| corrosion resistance | reliable insulation property | high thermal resistance | |
| working temperature（℃） | 250~300 | - | - |
| thermal conductivity | - | ≧ 170w/m·k | ≧ 24w/m·k |
| process | cutting, grinding | cutting, grinding | cutting, grinding |
| accuracy | ±0.01mm | ±0.01mm | ±0.01mm |
