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Tempered Glass

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Tempered Glass is four to five times mechanically stronger than annealed glass of the same type and thickness. This is due to stresses in the surface layer. Compressive surface stresses close microscopic cracks and make the glass much stronger.

High Thermal - Shock Strength
Tempered Glass is approximately three times as resistant to rapid temperature changes (thermal shocks) as annealed glass. Annealed glass is a brittle material. It breaks under the lowest tensile stress. Tensile Stresses on the surface can be caused by bending the glass sheet or by changes in temperature. A sudden change in temperature of about 40ºC - 50ºC is enough to break annealed glass. Tempered glass can withstand temperature changes of 150ºC without breaking. This is extremely important for architectural glass used in facades, especially in the spandrel areas.

When ordinary annealed glass is broken, it forms sharp, knife-like fragments. DURAGLAS tempered glass however, breaks into small, comparatively harmless pieces, unlikely to cause serious injuries. Its break pattern enables tempered glass to be classified as safety glass.

Temperature Resistance
Tempered Glass can withstand temperatures of up to 295ºC.

  • Dulles Glass and Mirror offers safety cut tempered glass and tempered glass panels for sale at affordable prices. We are the leading online ...

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  • Tempered glass is resistant to heat, and safe to use. When broken is the glass shatters into small particles with no dangerous splits. Tempered glass ...

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  • TempTech or tempered glass is made by heating the glass to approximately 500C and then suddenly cooled it down. After passing the tempering process, ...

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