Also known as Toughened Glass, Tempered Glass is defined as a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared to normal glass. Quenching sets the outer surfaces in compression and the inner surfaces in tension. It is naturally stronger and more resilient. Although, when broken, such stresses cause it to shred into small pieces rather than splinter granular into jagged shards. The granular chunks are less likely to cause injury.