Tempered glass is a glass that has been subjected to a special heating process reaching a temperature of 700°C about with a subsequent sudden cooling achieved with the help of cold water jets. Due to the thermal shock, a state of “compression” is produced on the surface of the glass plate, which causes an improvement of its mechanical resistance. If the toughened layer is scratched, tempered glass shatters into tiny, non-hazardous fragments. For this reason and for its great mechanical resistance it is considered a “safety glass”.
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