Product Describtion:
Borosilicate glass is one of transparent colorless glass, through wavelength is between 300 nm to 2500 nm, transmissivity is more than 90%, coefficient of thermal expansion is 3.3. It can acid proof and alkali, the high temperature resistant is about 450°C. If tempering, the high temperature can reach 550°C or so. Application: lighting fixture, chemical industry, electron, high temperature equipment and so on…
Density(20℃)
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2.23gcm-1
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expansion coefficient(20-300℃)
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3.3*10-6K-1
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Softening point(℃)
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820℃
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maximum working temperature(℃)
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≥450℃
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maximum working temperature after tempered(℃)
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≥650℃
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refractive index
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1.47
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transmittance
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92% ( thick≤4mm)
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SiO2 percent
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80% above
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