Feature
With a softening temperature of 1730°C, quartz glass supports long-term operation at 1100°C and short-term resistance up to 1450°C. It features ultra-low thermal expansion coefficient and excellent thermal shock resistance, remaining intact even after extreme high-temperature heating and rapid cooling. The material delivers outstanding chemical inertness against most corrosive substances, with only hydrofluoric acid causing corrosion, achieving better acid resistance than ceramic and stainless steel. It provides ultra-high visible and ultraviolet light transmittance, ensuring stable optical performance. In addition, its excellent high-temperature insulation capability enables stable electrical insulation under harsh thermal environments.
Application
Quartz glass tubes are widely used for high-end and high-temperature resistant lighting products, including halogen lamps, ultraviolet UV lamps and infrared heating equipment. It is also extensively adopted in various industrial scenarios such as specialized lighting solutions, semiconductor manufacturing, chemical industry and precision electrical equipment that require high temperature resistance, high light transmittance and superior insulation performance.
Available Size
Parameter |
Value |
Outer Diameter |
2~26mm |
Other sizes available upon request.
OEM is acceptable
Chemical Properties
Composition |
SiO2 |
OH |
Weight (%) |
≥99.95 |
0.02~0.05 |
*For reference only
Physical Properties
Property |
Value |
Linear Expansion Coefficient (20~320℃) |
5.5×10-7/℃ |
Density |
2.2g/cm3 |
Softening Point |
1683℃ |
Annealing Point |
1215℃ |
Strain Point |
1250℃ |
*For reference only