Fused silica prefabs
PRODUCT SPECIFICATIONS
Items | Standard value | |
Al2O3 % | ≤3 | |
SiO2 / % | ≥95 | |
CaO / % | ≤3 | |
Residue Quartz / % | ≤10 | |
Bulk density kg/m3 | as received | ≥1800 |
after 1300℃ / 5 hours | ≥1850 | |
True Density kg/m3 | as received | ≤2100 |
after 1300℃ / 5 hours | ≤2350 | |
Apparent porosity / % | as received | Avg. ＜18 |
after 1300℃ / 5 hours | Avg. ＜20 | |
Cold crushing strength（N/mm2） | as received | ≥30 |
Thermal expansion coefficient / % | growth at 1300℃ | ≥0 |
between 0 and 300 hours | ≤0.2 | |
Creep | 1500℃ / 20-50 N/mm2 | ≤0.2 |
Thermal Conductivity 1100℃ W/m.k | 250℃ | ≥1.1 |
1000℃ | ≥2.0 | |