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Comparison of Alumina, Mullite and Quartz Tube of Properties
| Chemistry |
Max. Working
Temperature
(no load) |
Thermo-conductivity |
Thermo-expansion |
Flexural Strength |
|---|
| Alumina (99.8%) |
1800 oC |
8.2 W/m*oC |
8.4 x 10-6/oC |
380 Mpa |
| Mullite (60% Al2O3+ 38%SiO2) |
1500 oC |
3.6 W/m*oC |
5.4 x 10-6/oC |
180 Mpa |
| Quartz (99.9% SiO2) |
1200 oC |
1.4 W/m * oC |
5.5 x 10-6/oC |
48 MPa |
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