... resisting and antioxidation, etc. They are applied to vacuum device, instrument ceramics, line insulation, switches of bands, outlets ... CeramicBulk Densityg/cm3>4.0>3.6>3.4>3.2>2.6 Dismantle-resistant Strengthkgf/cm238802800230020001200Coefficient of the ... ~7.86.5~7.56.3~7.3≤6≤8Medium Electric Constant1MHz20ºC10~119~109~10≤9≤ ... Loss Angle1MHz20ºC~500ºC×10-4≤3≤4≤6≤10≤20Volume Resistivity at 100ºCΩ·cm>1015> ...