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Customized High-Purity Quartz Products from China Suppliers - Factory Direct for Semiconductor and Chemical Applications
| 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 |
💬 Frequently Asked Questions
Q
What is the maximum operating temperature for fused quartz glass?
Fused quartz glass can withstand a short-term use temperature of up to 1300 °C and a long-term use temperature of up to 1100 °C. Its softening point is as high as 1780 °C, making it suitable for extreme high-temperature environments.
Q
Why does fused quartz glass have such a low thermal expansion coefficient?
Fused quartz glass is made from high-purity Silicon Dioxide (Natural Quartz), which gives it an exceptionally low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C. This property allows it to resist thermal shock and maintain dimensional stability across a wide temperature range.
Q
What thickness options are available for fused quartz glass?
Fused quartz glass is available in thicknesses ranging from 2 mm to 20 mm, providing flexibility for a wide variety of industrial and optical applications.
Q
What PPM purity grades are available?
The 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 purity for their specific application requirements, including semiconductor and high-precision optical uses.
Q
What is the compressive strength of fused quartz glass and how does it compare to other materials?
Fused quartz glass has a compressive strength of 1100 MPa, which is significantly higher than standard soda-lime glass. Combined with a Young's Modulus of 72,000 MPa, it exhibits excellent rigidity and resistance to compressive forces in demanding applications.
Q
Is the surface of fused quartz glass free of defects?
Yes. The fused quartz glass is manufactured to be free of air bubbles and surface lines, ensuring optical clarity and structural integrity. Its transparent or colorless appearance and high index of refraction (1.4585) make it ideal for optical and precision applications.