Tempered Glass

Tempered glass is made by heating flat glass to just below its softening temperature and suddenly chilling it with jets of cold air. It results 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 compressional stress on the surfaces to assure safety of use.


No tong marks on the glass as TGI adopts the horizontally tempering process.
5 times harder than ordinary annealed glass.
Once breakage occurs, the glass disintegrates into small cubical fragments which are relatively harmless to human body.
It withstands abrupt change of temperature. For example, a piece of 5mm tolerate the temperature variations within the range of 200°C.

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Automobile, train, vessel, architecture, furniture, automatic door, escalator, fireplace, etc.
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Thickness 3~19mm
Max.size 96" x 284" (2438mm x 7213mm)

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Heat Soak Test

TGI employs the heat soak testing system from Finland’s Tamglass to detect occasional occurrence of nickel sulfide (NiS) inclusions in tempered glass. Under strictly controlled temperatures, high- temperature α -NiS converts to low-temperature β-NiS which accompanies a 2.4% expansion in volume and causes the glass to break if NiS inclusion is located at tensile stress. The test reduces the frequency and risk of spontaneous breakage of tempered glass after installation.

Tempered glass is heat soaked for 2-8 hours (T2) at a constant temperature of 290°C±
10°C (DIN standard states 8 hours) and then allowed to return to room temperature over a specified time.


Heat Soak Test Process and Temperature Changes

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Chung Tai Temple

TG-CLR-12mm-T with Heat Soak Test

Rich-Nanking Building

Rijkswaterstaat Building
Amsterdam, Holland

TG-F.GR-12mm-T with Heat Soak Test
Tuntex Finanacial Building


Yeh Tsai Chi Ling-Yun Commercial Building (Right)


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