• Heat Strengthened Glass
  • Heat Strengthened Glass
  • Heat Strengthened Glass

Heat Strengthened Glass

Heat-strengthened glass differs from tempered glass in surface compression; its mechanical strength is about 1.6-2 times that of annealed glass.

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PropertiesHeat-Strengthened Glass
Thermal Shock ResistanceUp to 130°C
Mechanical StrengthTwo times stronger than annealed glass
FragmentationKnife Edges
Tensile Strength40-55 MPa
Bending Strength40 N/mm2
Design Stress for Architectural Purpose17 MPa

1. Heat-strengthened glass differs from tempered glass in surface compression; its mechanical strength is about 1.6-2 times that of annealed glass.

2. Heat-strengthened glass has outstanding thermal stability, its flatness and light transmission is close to that of annealed glass and much better than that of tempered glass.

3. HS Glass is 3 times more resistant to thermal stress in comparison to normal annealed glass.

4. It can withstand temperature difference of 100°C (in range of 50°C to 150°C) compared to ordinary annealed glass which can withstand up to 40°C.

5. Heat strengthened glass is that it is far less susceptible to spontaneous breakage.

Heat-strengthened glass is widely used in laminated glass for additional strength, such as in overhead and sloped glazing.