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read moreThe physical properties are as follows:
Silicon content | More than 80% |
Strain temperature | 520 ℃ |
Annealing temperature | 560 ℃ |
Softening temperature | 820 ℃ |
Refractive index | 1.47 |
Light transmittance (2 mm) | 92 % |
Elastic Modulus | 76KNmm - 2 |
tensile strength | 40- 120Nmm - 2 |
Glass stress optical constant | 3.8 * 10-6 square millimeters / no |
Processing temperature (104dpas) | 1220 ℃ |
Linear expansion coefficient (20-300 °C) | 3.3 * 10-6 K - 1 |
Density (20 °C) | 2.23gcm - 1 |
Specific heat | 0.9jg - 1K - 1 |
Thermal conductivity | 1.2Wm - 1K - 1 |
Water resistance (International Organization for Standardization 719) | Level 1 |
Acid resistance (International Organization for Standardization 195) | Level 1 |
Alkali resistance (International Organization for Standardization 695) | Level 2 |