Colorless Optical Glass - quartz glass

Quartz glass is a high-performance special glass, Colorless Optical Glass ,Quartz Glass,Colorless Optical GlassK9（BK7),and its product characteristics are mainly reflected in the following aspects: 1. Physical characteristics High hardness: The Mohs hardness reaches 7 levels, which is close to natural quartz minerals and much higher than ordinary glass (5.5-6 levels). High temperature resistance: Long term use temperature: 1100-1200 ℃; Can withstand temperatures between 1400-1450 ℃ in the short term. The softening point is as high as 1730 ℃, and the coefficient of thermal expansion is extremely low (0.54 × 10 ⁻⁷/℃), making it difficult to crack during sudden cooling and heating. Brittle: Although it has high hardness, it has poor impact resistance and is prone to breakage due to external forces. 2. Chemical characteristics Corrosion resistance: Except for hydrofluoric acid and hot phosphoric acid, it hardly reacts with other acids and bases, and its acid resistance is 30 times that…

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