Heat-Resistant Glass

heat-resistant glass

[′hēt ri‚zis·tənt ′glas]
(materials)
Glass, such as borosilicate glass, that is heat-treated or leached to remove alkali so that it withstands high heat and sudden cooling without shattering.

Heat-Resistant Glass

 

glass capable of withstanding sharp drops in temperature (thermal shocks) without shattering. Heatresistant glass includes all glass possessing a low coefficient of thermal expansion a. Quartz glass has the greatest heat resistance of all and will not shatter even when the change in temperature is as much as 1000°C (α = 5.67 × 10–7 1/°C at 500°C). Borosilicate and certain other kinds of glass are also heat-resistant. Ordinary glass (window, container) is resistant to changes of up to 80°–100°C. The heat resistance of glass depends not only on the glass’s chemical composition but also on the intensity of heat emission at the surface of the article, the quality of the surface, and the dimensions of the article. Heat resistance can be increased by tempering, fire-polishing, or chemically treating the glass to remove defects from the glass surface. Laboratory glassware, radio tubes, and water gauges for steam boilers are made of heat-resistant glass.

heat-resistant glass

Glass able to withstand higher temperatures than usual because of its low expansion coefficient.
References in periodicals archive ?
Initially created by Corning Glass scientists charged with developing lantern glass for railroads, the Pyrex brand was born when Bessie Littleton, wife of a Corning scientist, asked her husband to bring home some heat-resistant glass to use in place of her broken casserole dish.
The cockpit had special heat-resistant glass to withstand surface temperatures of 640 degrees F (338 C).
Inert containers are best, for example heat-resistant glass, ceramics and good old stainless steel," he added.
The material is kovar, an alloy of nickel, cobalt and iron, compatible with the thermal expansion characteristics of heat-resistant glass used in semiconductors and microelectronics.
GWF glass wool with high maximum service temperature, heat-resistant glass wool
Here, a new heat-resistant glass hearth freshens up the log stove, with trendy ceiling spotlights illuminating the room.
Wai composes complete main dishes on single plates; Chinese home cooks often use heat-resistant glass pie pans or shallow heatproof bowls.
It also faces competition from China, which has mastered the manufacturing of borosilicate glass, or heat-resistant glass.
Others are in artificial grass, heat-resistant glass, fire retardant and as a controlling agent for atomic reactions in nuclear power plants.
Incorporating a unique double-filter system with heat-resistant glass, there's no need to transfer your filtered coffee to another mug.
Tiles made from a special heat-resistant glass cover the shuttle's underside.
In terms of the type of material used to produce glassware, the market is split into three sectors: soda lime glass, lead glass and heat-resistant glass.