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📊 Mechanical & Physical Properties
| Mechanical Behavior | Standard Values |
|---|---|
| Density | 2.2 g/cm³ |
| Compressive Strength Key | 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 Key | 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 Key | 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 use temperature for fused quartz glass?
Fused quartz glass can withstand a short-term use temperature of up to 1300 °C, while its recommended long-term use temperature is 1100 °C. The thermal processing temperature ranges from 1750 °C to 2050 °C.
Q
What makes fused quartz glass thermally stable?
Its exceptionally low thermal expansion coefficient of 5.5 × 10⁻⁷ cm/cm·°C makes fused quartz glass highly resistant to thermal shock and dimensional change across a wide temperature range, making it ideal for precision high-temperature applications.
Q
What material is fused quartz glass made from?
Fused quartz glass is made from Silicon Dioxide (SiO₂) derived from natural quartz. It is transparent or colorless, with a surface free of air bubbles and lines, ensuring optical clarity and structural integrity.
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, produced in a circular shape. Custom PPM grade control options are available at 10, 20, and 100 PPM to meet various purity requirements.
Q
How hard is fused quartz glass compared to other materials?
Fused quartz glass has a Mohs hardness of 5.5 to 6.5 and a compressive strength of 1100 MPa, which makes it significantly harder and more durable than standard glass, suitable for demanding industrial and optical environments.
Q
What is the index of refraction of fused quartz glass?
The index of refraction of fused quartz glass is 1.4585, which makes it highly suitable for optical applications including lenses, prisms, and windows where precise light transmission is critical.