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SiO2 Crystal Fused Quartz Glass, Hardness Quartz Glass, Optical Glass lens, Quartzs Glass Pipe, Quartz Optical Windows, SiO2 Quartz Tube, GS1, GS2 quartz cover lens
Fused quartz is an amorphous (glassy) form of silicon oxide
(quartz, silica).
It is a typical glass with a long-range disordered atomic structure.
It provides a high operating temperature and low thermal expansion coefficient through cross-linking of the three-dimensional structure.
The use of fused quartz materials in precision casting shells has been increasing year by year,
especially in the surface layer of silica sol shells, and has achieved very effective results.
It has made great breakthroughs in the use and price ratio of zircon materials
and is a more ideal material for engineering applications.
Fused quartz is made by melting natural high-purity silicon dioxide in an electric furnace at a temperature above 1760°C and then rapidly cooling it.
This process transforms crystalline silicon dioxide into an amorphous glass melt.
The melting temperature of fused quartz is about 1713°C, the
thermal conductivity is low, and the thermal expansion coefficient
is almost the smallest among all refractory materials, so it has
extremely high thermal shock stability.
Therefore, during the roasting and pouring process, the fused quartz shell rarely breaks due to temperature changes. It is an ideal refractory material for investment casting and can be used as a refractory material for surface or back coating, as well as a sanding material.
Features of Fused Quartz Glass
High Purity: Typically over 90% pure silicon dioxide.
Optical Clarity: Excellent transparency across a wide range of wavelengths.
Thermal Stability: Can withstand high temperatures (up to approximately 1,100°C).
Chemical Resistance: Highly resistant to most chemicals, except for strong alkalis and hydrofluoric acid.
Mechanical Strength: Relatively brittle but can be very strong under compressive forces.
Hardness | 5.5-6.5 Mohs' Scal 570 KHN 100 |
Design Tensile Strength | 4.8x107 Pa (N/mm2) (7000psi) |
Design Compressive Strength | >1.1x109 Pa (160,000 psi) |
Bulk Modulus | 3.7x1010 Pa (5.3x106psi) |
Rigidity Modulus | 3.1x1010 pa (4.5x106psi) |
Young's Modulus | 7.2x10-10 pa (10.5x106 psi) |
Poisson's Ratio | 0.17 |
Coefficient of Thermal Expansion | 5.5x10-7cm/cm. °C (20°C-30°C) |
Thermal Conductivity | 1.4 W/m. °C |
Application of Fused Quartz Glass
Due to the features above, fused quartz glass has a wide range of applications
Samples
1.Customized Shape Fused Quartz Plate , Fused Silica Glass For Observation Window
2.Optical Fused Silica Quartz Tube SiO2 Crystal Material With Customized Hole Shape
FAQ
1. Q: Does Fused Quartz Glass degrade over time?
A: Minimal degradation over time, but prolonged exposure to certain chemicals or environments can cause surface wear.
2. Q: How does Fused Quartz Glass compare to Borosilicate Glass?
A: Fused Quartz Glass offers excellent thermal and chemical resistance at a lower cost
Sapphire Glass provides superior hardness and scratch resistance, making it ideal for high-durability and precision applications.
