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Name | 99% Alumina Ceramic | 95% Alumina Ceramic | zirconia ceramic | steatite ceramic | ||||
Main Material | AL203≥99% | AL203≥95% | ZR02≥94% | MGOSIO2 | ||||
Physical Properties | Density | g/m³ | 3.85 | 3.6 | 5.9 | 2.8 | ||
Water Absorption | % | 0 | 0 | 0 | 0 | |||
Sintering Temperature | ℃ | 1700 | 1670 | 1600 | 1350 | |||
Material Properties | Hardness | HV | 1700 | 1600 | 1400 | 800 | ||
Flexural Strength | Kgf/m㎡ | 3500 | 2900 | 11000 | 900 | |||
compressive Strength | Kgf/m㎡ | 30000 | 25000 | 25000 | 4000 | |||
Thermodynamic Properties | Max Temperature | ℃ | 1600 | 1450 | 1300 | 1100 | ||
Coefficient of thermal expansion(0-1000℃) | ℃ | 8 | 7.8 | 10 | 6 | |||
Heat shock resistance | T(℃) | 200 | 220 | 350 | 200 | |||
Thermal conductivity | W/m.k | 31 | 22 | 3 | 2.5 | |||
Electrical Properties | Volume resistivity | Ω.CM | >1012 | >1012 | >1012 | >1012 | ||
Insulation breaking strength | KT/M | 18 | 16 | 15 | 10 | |||
Dielectric constant | 1MHZ(E) | 9.2-10.5 | 9.0-10 | 12.5 | 5.8 | |||