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High temperature resistance. The softening point of quartz glass is approximately 1730℃, and it can be used for extended periods at 1100℃. Its short-term maximum operating temperature can reach 1450℃.
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Corrosion resistance. Except for hydrofluoric acid, quartz glass hardly reacts chemically with other acids. Its acid resistance is 30 times that of ceramics and 150 times that of stainless steel. Its chemical stability at high temperatures is unparalleled by any other engineering material.
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Good thermal stability. Quartz glass has an extremely low coefficient of thermal expansion, allowing it to withstand drastic temperature changes. Even when heated to around 1100℃ and then placed in room temperature water, it will not crack.
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Good light transmittance. Quartz glass exhibits good light transmittance across the entire spectrum from ultraviolet to infrared, with a visible light transmittance exceeding 93%. Particularly in the ultraviolet spectral region, the maximum transmittance can reach over 80%.
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Good electrical insulation properties. Quartz glass has a resistivity ten thousand times that of ordinary glass, making it an excellent electrical insulator that retains good electrical properties even at high temperatures.
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