Toughened Glass

Toughened glass is produced by the thermal toughening of ordinary annealed glass. Once the glass is cut to size and any edge polishing, hole drilling, cut outs etc are done the glass is placed in a furnace and heated to approximately 600°C. Toughened glass is approx four times stronger than annealed glass and cannot be broken unless sufficient force is applied. If it is broken it will break into very small particles with dulled edges. It can also withstand temperature differences of up to 280°C, where as annealed glass is 50-60°C. Toughened glass cannot be cut or modified after manufacture.
Toughened glass that meets the requirements of AS2088 is rated as a Grade A Safety Glass.