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Heat Resistant Quartz Lamp Holders for Industrial Use - High-Purity Glass from China Suppliers and Factory
| Mechanical Behavior | Standard Values |
|---|---|
| Density | 2.2 g/cm³ |
| Compressive strength | 1100 MPa |
| Flexural strength | 67 MPa |
| Poisson's ratio | 0.14 ~ 0.17 |
| Young's modulus | 72,000 MPa |
| Modulus of rigidity | 31,000 MPa |
| Mohs hardness | 5.5 ~ 6.5 |
| Transformation point | 1280 °C |
| Softening point | 1780 °C |
| Annealing point | 1250 °C |
| Specific heat (20 ~ 350 °C) | 670 J/kg·°C |
| Thermal conductivity (20 °C) | 1.4 W/m·°C |
| Index of refraction | 1.4585 |
| Low thermal expansion coefficient | 5.5 × 10⁻⁷ cm/cm·°C |
| Thermal processing temperature | 1750 ~ 2050 °C |
| Short-term use temperature | 1300 °C |
| Long-term use temperature | 1100 °C |
| Material | Silicon Dioxide (Natural Quartz) |
| Color | Transparent or colorless |
| Surface | No air bubble, no line |
| Strain | 1270°C Fused Quartz Glass Brick |
| PPM grade | Controlled 10 / 20 / 100 PPM |
| Shape | Circle |
| Thickness | 2 mm – 20 mm |
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Frequently Asked Questions
Q
What is the maximum continuous use temperature of fused quartz glass?
Fused quartz glass can withstand a long-term continuous use temperature of up to 1100 °C, while short-term peak applications can reach 1300 °C, making it suitable for high-temperature industrial environments.
Q
Why does fused quartz glass have such a low thermal expansion coefficient?
Fused quartz is made from pure Silicon Dioxide (SiO₂) with a highly disordered amorphous structure. This results in an exceptionally low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C, providing outstanding thermal shock resistance compared to conventional glass.
Q
What PPM purity grades are available for fused quartz glass?
Our fused quartz glass is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM, allowing customers to select the appropriate level of trace element content for semiconductor, optical, or industrial applications.
Q
What thickness options are available for fused quartz glass?
Fused quartz glass is available in a thickness range of 2 mm to 20 mm in circular shapes, accommodating a wide variety of engineering and optical requirements.
Q
How does the compressive strength of fused quartz compare to its flexural strength?
Fused quartz glass exhibits a very high compressive strength of 1100 MPa, while its flexural (bending) strength is 67 MPa. Like most glass materials, it performs significantly better under compression than under tensile or bending loads.
Q
Is fused quartz glass optically transparent?
Yes. Fused quartz glass is fully transparent and colorless, with an index of refraction of 1.4585. Its surface is manufactured with no air bubbles and no lines, ensuring excellent optical clarity for precision applications.