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Customized Quartz Products from China Suppliers - High-Purity Quartz Factory for Semiconductor and Optical Applications
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Mechanical Behavior & Standard Values
| 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 operating temperature for fused quartz glass?
A
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 thermal processing temperature ranges from 1750°C to 2050°C, making it suitable for extreme high-temperature applications.
Q
What material is this quartz glass made from?
A
The quartz glass is made from Silicon Dioxide (SiO₂) derived from Natural Quartz. It is transparent or colorless in appearance, with a surface free of air bubbles and lines, ensuring high optical and structural quality.
Q
What thickness options are available for the quartz glass?
A
The quartz glass is available in a thickness range of 2mm to 20mm, with a circular shape. Custom thickness within this range can be accommodated based on specific application requirements.
Q
What is the thermal expansion coefficient of this quartz glass?
A
The quartz glass has an extremely low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C. This ultra-low expansion rate makes it highly resistant to thermal shock and dimensional change under temperature fluctuations.
Q
What PPM purity grades are available for this quartz glass?
A
The quartz glass is available in controlled purity grades of 10 PPM, 20 PPM, and 100 PPM. These grades allow customers to select the appropriate purity level based on their semiconductor, optical, or industrial application needs.
Q
How does the compressive strength of fused quartz glass compare to its flexural strength?
A
Fused quartz glass has an exceptionally high compressive strength of 1100 MPa, making it highly resistant to compressive loads. Its flexural (bending) strength is 67 MPa, which, while lower, is typical for glass materials. For applications involving bending forces, additional structural support is recommended.

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