Thermal Properties
| Thermal Conductivity | 1.38(W/m°K) |
| Coefficient Of t\Thermal Expansion(0~1000°C) | 0.55(10-6/°C) |
| Normal Operating Temperature | Continuous Usage | ~1050°C |
| Non Continuous Usage | ~1250°C |
| Strain Point | ~1075°C |
| Annealing Point | ~1180°C |
| Hot Pressing Temperature | ~1700°C – 2100°C |
| Devitrification Temperature | Starting at ~1000° C. high temperature accelerates Devitrification, especially with surface contaminants such as alkaline solution, salts and vapors. |
Physical Properties
| | Units of Measure | Value |
|---|
| Density | gm/cc (lb/ft3) | 2.2 |
| Porosity | %(%) | 0 |
| Tensible Strength | 106 Pa | 48.3 |
| Young’s Modulus | 106 Pa | 71.7 |
| Hardness | Kg/mm2 | 600 |
| Thermal Conductivity | W/m°K | 1.38 |
| Coefficient of Thermal Expansion | 10-6/°C | 0.55 |
| Specific Heat | J/Kg.°K | 740 |
| Dieletric Strength | Ac-kv/mm (volts/mil) | 30 |
| Dieletric Constant | @1MHz | 3.82 |
| Index of refraction @ 587.6nm | — | 1.4585 |
Fused Quartz Average Transmission Curve
Includes Surface Reflection Losses
