Customization: | Available |
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Application: | Refractory |
Grain Size: | 3mm-100mm |
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Technical Data | ||||
Ceramic characteristics | ||||
Item | 99% Ceramic | 95% Ceramic | zirconia | |
Main content | AL2O3>=99% | AL2O3>=95% | ZrO2>=94% | |
physical property | Density | 3.85 | 3.6 | 5.9 |
Water absorption % | 0 | 0 | 0 | |
Sintering temperature | 1690ºC | 1670ºC | 1650ºC | |
Material property | Hardness HV | 1700 | 1600 | 1400 |
Flexural strength 4pt | >3500 | >2900 | >11000 | |
Compressive strength Kgf/cm² | 30000 | 25000 | 25000 | |
Thermodynamic property | Maximum working temperature | 1500ºC | 1400ºC | 1600ºC |
Coefficient of thermal expansion | 8 | 7.8 | 10 | |
10-6/ºC | ||||
0-1000ºC | ||||
Heat shock force T(ºC) | 200 | 220 | 350 | |
Thermal conductivity W/m.k | 31 | 22 | 3 | |
Electrical characteristic | Volume resistivity Ω.cm | >10¹² | >10¹² | >10¹² |
Insulation breaking strength KT/m | 18 | 16 | 15 | |
Dielectric constant 1MHZ(E) | 9.2-10.5 | 9.0-10 | 12.5 |