Property | Value | Noted | ||
Density | 2.2g/cm3 | Thermal stability: Put the quartz material from 1100 °C to 20 ℃ three times, will not cracks. It will be not changed color under 1100 degree for three hours. | ||
Hardness | 570KHN100 | |||
Tensile strength | 4.8×107Pa(N/m2) | |||
Compression strength | >1.1×109 Pa | |||
Coefficient of thermal expansion (20℃-300℃) | 5.5×10-7cm/cm℃ | |||
Thermal conductivity (20℃) | 1.4W/m℃ | |||
Specific heat(20℃) | 660J/kg℃ | |||
Softening point | 1730℃ | |||
Annealing point | 1250℃ |