What is High Borosilicate Glass

High borosilicate glass, it is a kind of low inflation, high temperature resistant, high strength, high hardness, high light transmittance and High Chemical stability special glass material, compared with common glass, non-toxic side effects, its mechanical properties, thermal stability, water resistance, alkali resistance, acid resistance and other properties is greatly increased, which can be widely used in chemical industry, aerospace, military, families, hospitals and other fields, can be made into lamps, tableware, scaleplate, telescope, observation hole washing machine, microwave oven tray, solar water heaters and other products, has good promotion value and social benefits, this kind of glass in our country is basic material industry is a new revolution.


The linear expansion coefficient of high borosilicate glass is 3.3 x 0.1×10-6/K. It is a kind of glass with sodium oxide (Na2O), boron oxide (B2O2) and silicon dioxide (SIO2) as the basic components.The content of borosilicate in the glass component is relatively high, respectively: boron: 12.5~13.5%, silicon: 78~80%, so this kind of glass is called high borosilicate glass


High borosilicate glass is made by using the conductive property of glass at high temperature, melting the glass by heating inside the glass, and processed by advanced production technology.Used for microwave oven cylinder washing machine observation window etc heat-resistant teapot and teacup.


The physical and chemical properties of high borosilicate glass are as follows:

Silicon  80%

The strain temperature is 520℃

Annealing temperature 560℃

The softening temperature is 820℃

The processing temperature (104DPAS) is 1220℃

Thermal expansion coefficient (20-300 ° C) 3.3×10-6K-1, so the rapid cooling and rapid heat resistance is superior.

Heat tolerance: 270 degrees

Density (20℃)

Post time: Aug-20-2020