Characteristics
»»» Strength: Gold Plus Toughened
Glass is four to five times mechanically stronger
than annealed glass of the same type and thickness.
This is due to stresses in the surface layer. Compressive
surface stresses close microscopic crack and make
the glass much stronger.
High Thermal-Shock
Strength: Gold Plus
Toughened Glass is approximately three times as
resistant to rapid temperature changes (thermal
shocks) as annealed glass. Annealed glass is a brittle
material. It breaks under the lowest tensile stress.
Tensile stresses on the surface can be caused by
bending the glass sheet or by changes in temperature.
A sudden change in temperature of about 40oC - 50oC
is enough to break the glass. The tempered glass
can withstand changes of 150oC without breaking.
This is extremely important for architectural glass
used in facades, especially in the spandrel areas.
Safety:
When ordinary annealed glass is broken it forms
sharp, knife-like fragments. Gold Plus toughened
glass however breaks into small, comparatively harmless
pieces, unlikely to cause serious injuries. It is
therefore evident that tempering is necessary for
improving the safety and the mechanical properties
of the glass. Its break pattern enables tempered
glass to be classified as safety glass.
Temperature Resistance:
Gold Plus toughened glass can withstand temperature
of upto295oC.
Strength:
Safety: