Properties
Items | Data |
SiO2 Content | ≥ 99.5 % |
Bulk Density | 1.9 ~ 1.99 g/cm3 |
Apparent Porosity | 7 ~ 13 % |
Compressive Strength (at room temperature) | ≥ 60 MPa |
Flexural Strength (at room temperature) | ≥ 25 MPa |
Flexural Strength (at 1100℃ for 30mins.) | ≥ 28 MPa |
Coefficient of Thermal Expansion (RT ~ 1000℃) | ≤ 0.6 x 10-6/℃ |
Thermal Conductivity (at 500℃) | 0.66 W/m℃ |
Cristobalite | ≤ 2 % |
Surface Roughness | ≤ 2.0 µm |
Diameter Accuracy | ± 0.05 mm |