Tempered glass is a type of glass with even compressive stress on the surface which is made by heating float glass to nearly softening point and then cooling it down rapidly by air. During the instant cooling process, the exterior of glass is solidified due to rapid cooling while the interior of the glass is cooled down relatively slowly. The process will bring the glass surface compressive stress and the interior tensile stress which can improve the mechanical strength of glass by germination and result in good thermal stability.
Safety: Glass is not easy to be broken when attacked. Broken glass particle is of honeycomb shape with obtuse angles which won't cause serve hurt to human body.
High Mechanical-resistant strength: Impact-resistant strength of tempered glass is 3-5 times higher than that of float glass of the same thickness.
Thermal stability: Thermal stability of tempered glass is 3 times higher than that of float glass of same thickness. Tempered glass can withstand sudden temperature shift of 220-250 degree while float glass can only withstand shift of 70-100 degree.
Good flexibility: Deflection angle of tempered glass is 3-4 times larger than that of float glass of the same thickness. When there is load on tempered glass, its maximum tensile stress does not locate on the glass surface as float glass, but on the centre point of glass sheet.
Tempered glass is safety glass, extensively applied in the places which has critical request of high mechanical strength and safety, such as glass door, curtain wall, indoor partition, elevator, showroom, windows of building, furniture and household appliance, etc.