High Borosilicate Glass

We are engaged in manufacturing and exporting excellent quality High Borosilicate Glass in Changsha, Hunan, China. High borosilicate glass (also known as hard glass), is processed by advanced technology, using the conductive characteristic in high temperature to internal heat glass to melt it. The thermal expansion coefficient is (3.3+ /-0.1)x10-6/K, so some people also call it "borosilicate glass 3.3". It is a kind of special glass material that is of low inflation, high temperature resistant, high strength, high hardness, high transmittance and high chemical stability. For the excellent performance, it is widely used in solar power, chemical industry, pharmaceutical packaging, electric light source, craft decorations and other industries.

Basic property:-
-Very high transmittance of UV & IR and extremely low fluorescence intensity
-Extremely low thermal expansion ratio, strong thermal shock resistance and 450 for long term working temperature
-Excellent chemical stability, high resistance to water, acid, alkali and other organics
-Excellent scratch resistance, extremely high hardness and 20% lower density than common soda-lime glass
-Excellent electrical insulator for its very low alkali

Technical index:-
Thickness: 0.4,0.5,0.6,0.7, 1.1, 1.75, 2.0, 2.25, 2.75, 3.3, 3.8....25.4(+/-0.2mm)
Size: 1150A 850, 1150A 1700, 1300A 1700, 2300A 1700(special size can be made customized)
Density: 2.23g/cm3
Refractive index: 1.47384
Transmittance: 91%
knoop hardness: 480