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Toughened Safety Glass
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Characteristics of Toughened Glass
Toughened glass is four to five times stronger than annealed glass of the same size and thickness against impact.Toughened glass has higher thermal strength and can withstand a high temperature differential upto 250 Degree C.Toughened glass is considered as safety glass. It is difficult to break and even in the event of a breakage, disintegrates into small globules, which are relatively harmless.
Toughening does not alter the basic characteristics of glass such as light transmission and solar radiant heat properties.
After heat treatment, the surface of toughened glass has the same resistance to surface damage as annealed glass.Toughened glass cannot be cut, drilled or altered.
Heat soak test is recommended to be carried out on Toughened glass that is used for overhead and horizontal application, to prevent the spontaneous breakage caused due to nickel sulphide inclusion.
Toughening increases tensile strength, thermal shock resistance and safety of normal glass. It also increases its heat withstanding capacity. Because of these properties, toughened glass is preferred in applications where strength, safety and thermal resistance are significant.