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Heat soaked glass also called HST tempered glass, heat-reinforced glass, is created for reducing the risk of spontaneous breakage in toughened glass.

All float glass contains a imperfection of nickel sulfide (NiS) inclusion. Most of NiS inclusions are stable and cause no problems. However it has possibility that NiS inclusions could cause spontaneous breakage in fully tempered glass.

In tempered glass, the heated glass is cooled rapidly, to achieve the required internal tensile and surface compression stresses. But the NiS inslusion have no time to back to the original status in this process, as time being, the NiS inclusion return to low temperature and increased its volume in glass, which eventually caused the breakage of glass. The spontaneous is about 3‰, good quality tempered glass can be 1‰. But it is unavoidable.

Heat soaking is re-heat the tempered glass in heat soaking chamber, for several hours at high temperature of 290℃.  This is to accelerate NiS expansion. This is intended to make the glass panels contains NiS to break in the heat soak chamber, thus reducing the risk of potential breakage after installation.

To know more details of heat soaked glass, and heat strength glass, and tempered glass ESG, please refer to our glass products as below:


Heat Soaked Glass

China 10MM Heat Soak Toughened Glass panels, 10MM Heat Soaked Tempered Safety Glass, 10mm Heat Soaked Tempered Toughened Glass manufacturer

10MM Heat Soak Toughened Glass panels, 10MM Heat Soaked Tempered Safety Glass, 10mm Heat Soaked Tempered Toughened Glass

Glass type: 10MM Heat Soak Tempered Glass
Other name:10MM Heat Soaked Testing Tempered Glass/ 10MM HS Toughened Safety Glass/ ESG glass
Thickness range: 4mm 5mm 6mm 8mm 9mm 10mm 12mm 15mm 19mm
Size: cut to size, extra large size, bespoke size (minmum 300mm x300mm, maximum 8000mm)
Color: clear, ultra clear, frosted, tinted colors, printed colors
Package: safety exportation wood crates
Delivery: 7-15 days, urgent service available
Container: LCL, 20'GP More