Heat-resistant glass

Heat-resistant (or high-temperature, thermostable) glass — the glass that has properties to withstand high temperatures and temperature fluctuations (thermal strokes) without being destroyed.

Heat resistance of such glass is caused by its chemical composition. Quartz and borosilicate glass refers to refractory materials.

«Siberian Glass Company» offers colourless borosilicate glass (China).

Field of application

• doors of fireplaces and furnaces
• glass for ovens and microwave ovens

Heat-temperature glass can be exposed to almost all kinds of processing. 
For our customers:

• sale of borosilicate glass in sheets  600×1 200 mm, thickness 4mm
• cutting to a required size
• edging (grinding, polishing, facet)
• drilling

Properties of heat-resistant borosilicate glass

Heat-resistant glass value — starting from 14 500 rubles per sq.m. Price for articles produced by the required sizes is calculated individually.

General information

All types of glass that have a low coefficient of expansion α refer to heat-resistant glass. The most heat-resistant glass is quartz glass. It is not destroyed under temperature change up to 1000°С. Borosilicate glass can withstand temperature up to 500°С. Resistance of common industrial glass (natrium-calcic) — window and container glass — is up to 80—100°С.

Heat-resistance of glass depends not only on its chemical composition, but also on a thermal transfer rate on an article surface, quality of a surface and article sizes.

Borosilicate glass — the glass of common composition, in which alkaline components of the feed stock are replaced by boric oxide. Due to that high chemical resistance and low coefficient of temperature expansion are attained. Borosilicate glass is proof against almost all known substances. Because of high resistance to saline, organic substance, halogens (chlorine, bromine) and to most of acids, it is used in cases, when other materials can’t be applied.

On a domestic level borosilicate glass is more often used as protective glass at doors of furnaces and fireplaces, at doors of domestic equipment (microwave ovens, ovens). Such terms as high-temperature, heat-resistant and thermostable glass are applied.

Bake ware, laboratory glassware and even work of art are also made of such glass.