Introduction of high borosilicate glass
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Introduction of high borosilicate glass
High borosilicate glass (also known as hard glass), because of the coefficient of thermal expansion of the line (3.3 ± 0.1) × 10-6 / K, is also known as "borosilicate glass 3.3". It is a special glass material with low expansion rate, high temperature resistance, high strength, high hardness, high light transmittance and high chemical stability. Due to its excellent performance, it is widely used in solar energy, chemical industry, pharmaceutical packaging, electric light source. , craft jewelry and other industries. Its good performance has been widely recognized by all walks of life around the world, especially in the field of solar energy, and developed countries such as Germany and the United States have carried out more extensive promotion.
Silicon content: 80% or more
Strain temperature: 520 °C
Annealing temperature: 560 °C
Softening temperature: 820 °C
Refractive index: 1.47
Light transmittance (2 mm): 92 %
Modulus of elasticity: 76KNmm - 2
Tensile strength: 40- 120Nmm - 2
Glass stress optical constant: 3.8 * 10-6 square mm / no
Processing temperature (104dpas): 1220 °C
Linear expansion coefficient (20-300 °C): 3.3 * 10-6 K - 1
Density (20 °C): 2.23gcm - 1
Specific heat: 0.9jg - 1K - 1
Thermal conductivity: 1.2Wm - 1K - 1
Water resistance (ISO 719): Level 1
Acid resistance (International Organization for Standardization 195): Level 1
Alkali resistance (International Organization for Standardization 695): Level 2
The borosilicate glass is made by utilizing the characteristics that the glass is electrically conductive at a high temperature, and is melted by heating inside the glass to be processed by an advanced production process.
If you are interested in the borosilicate glass tubes or need to consult, please click on our online customer service, or call us.
Pan Chao, customized different quality specifications of the glass.
Pan Chao special industrial glass, tailored for your different quality of the glass.
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