Common Clear Float Tempered Glass

What is Clear Float Tempered/Toughened Glass?
Clear float glass, it is molten glass floats on the tin and
spreads out thus seeking a controlled level. Control heating will then allows the glass to flow and form a float ribbon of uniform thickness while on the tin bath. Glass is then slowlycooled and fed off from the molten tin into the annealing lehr for further cooling.
Clear float tempered/toughened glass is float glass that has been processed through a tempering oven to

increase its strength to resist impact, mechanical loads and thermal
stress breakage.
Glass is heat-treated by heating annealed glass to a temperature of approximately 1,150°F (621°C), then rapidly cooling it. The glass is cooled by a carefully controlled airflow (also known as quenching), which uniformly cools all glass surfaces simultaneously.
It is approximately four times stronger than annealed glass of the same thickness and configuration. When it is broken, tempered glass fractures into small fragments that reduce the probability of serious injury as compared to annealed glass.