Tempered Glass is made by heating flat glass to just below its softening temperature (650 °c) and suddenly chilling it with jets of cold air. It results in the outer skins under powerful compressive stress and the interior with severe tensile stress. In consequence, the impact applied to the glass will be overcome by the compressive stress on the surfaces to assure safety of use. It is ideal for areas with high wind loads and areas where human contacts are an important consideration.