Types of Glass

Annealed Glass

Annealed glass is a basic product formed when float glass goes through the annealing stage of the float process. The molten glass is allowed to cool slowly in a controlled way until it reaches room temperature, relieving any internal stresses in the glass, ensuring that it will not crack under changes in temperature or mechanical shock.

Heat Strengthened Glass

Heat-strengthened glass, also called tempered glass or toughened glass, is a type of annealed glass that has been heated and cooled at high temperatures. Heat-strengthening annealed glass makes it twice as strong as annealed glass. This type is designed for car glass.

Tempered or Toughened Glass

Annealed glass has many uses, including structural applications such as balustrades. Annealed glass is heated to about 700 degrees Celsius (1,292 degrees Fahrenheit) using a combination of conduction, convection and radiation. Cooling glassware by blowing air on it forces the outer surface to cool more quickly than the inner body of the glass, causing compressive and tensile stresses.