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Heat Strengthened Glass

  • Heat-strengthened glass is a heat treated glass which retains the normal properties of ordinary float glass. It is similar to tempered glass except that the cooling is done slower than toughened glass but faster than annealed glass.
  • Heat strengthening increases resistance to mechanical and thermal stress up to 130 Degree Celsius Heat-strengthened glass differs from tempered glass in surface compression; its mechanical strength is about 2 times that of annealed glass.
  • Compared to annealed glass, Heat-strengthened glass has higher thermal stability. Heat-strengthened glass is 3 times more resistant to thermal stress in comparison to normal annealed glass.
  • Heat strengthened glass is far less susceptible to spontaneous breakage.