Tempering refers to the process of heat treating glass. In the first step, the glass is heated in a furnace at temperatures between 600-700 degrees Celsius for a certain period and then rapidly cooled with pressurized air. During this cooling process, the surface of the glass hardens starting from the outside and then the inner parts cool down. As a result, high pressure is formed on the surface of the glass, while tensile stresses are formed in the interior. Thanks to this special process, tempered glass offers five times more durability compared to standard glass of similar thickness and is more resistant to heat. When broken, it shatters into small blunt pieces, minimizing the risk of injury, which is why it is classified as safety glass.

Operations such as cutting, edge smoothing, or drilling cannot be performed on tempered glass. It is important to note that the tempering process does not affect the dimensions, color, clarity, or chemical structure of the glass.

Tempered glass can withstand sudden temperature changes up to 200 degrees Celsius (thermal shock); in contrast, untreated glasses may break at temperature differences of approximately 40 degrees Celsius.

The uses of tempered glass are wide-ranging; they are preferred in the exterior facades of buildings, in appliances (ovens, refrigerators, etc.), in the automotive industry (side and rear windows), in bathroom areas (shower and tub enclosures), in furniture (tables, cabinets, stands), in railings, in balcony enclosure systems, and in lighting fixtures. The reason they are preferred in these areas is that even when they break, they minimize safety risks due to their high durability.