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 ?
When at the desired temperature, serve in a heat-resistant glass mug and garnish with a clove-studded lemon wheel.
The lighting sensors are automatic as are the rain sensors, one of the greatest technologies available in the car--especially with the electric ceiling, heat-resistant glass, and harmful rays' resistant ceiling to suit different climates and regions.
ChemexEeA is an example of a manual pour-over method, an elegant one-piece hourglass shaped vessel, made of high quality, heat-resistant glass. With a brew time typically between 4 and 5 minutes, ChemexEeA is great at balancing out the coffee - heavy coffees come through more cleanly, and bright coffees come through a little more balanced.
Stashed somewhere in my kitchen are: two sets of Schott Zwiesel champagne flutes, a Master Chef cook's knife, a Lodge stoneware rectangular roaster, a Schott Zwiesel hot and cold pitcher, and a Schott Zwiesel four-quart heat-resistant glass ovenware.
But the quartz does not block UV radiation, which is why manufacturers add UV-blocking agents and heat-resistant glass to block the UV; however, the amount blocked is usually unknown.
Examples abound, such as the Chemex coffeemaker, a one-piece, hourglass-shaped vessel made of heat-resistant glass and featuring a polished wood collar and leather tie.
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.
heat-resistant glass pie pan; save any pieces that don't fit for another use.