Tempered and heat<strengthened glass is obtained by heating ordinary glass to its softening point and then suddenly cooling down to form compression in the surface layer of the glass, thus the mechanical strength is increased by times.The surface compression of tempered glass is above 90MPa,and the surface compression of heat-strengthened glass is between 24MPa to 52MPa.
FEATURES OF TEMPERED GLASS
Safety: when broken, tempered glass becomes small granules, which prevent substantial hurt to human body.
High Strength: the strength of tempered glass is 4 to 5 times that of annealed glass.
Bending Deflection: the bending deflection of tempered glass is 3 to 4 times that of annealed glass.
Thermal Stability: tempered glass has excellent thermal stability, about 3 times that of annealed glass,which can withstand up to 300°C thermal shock.
FEATURES OF HEAT-STRENGTHENED GLASS
Heat-strengthened glass differs from tempered glass in its surface compression; its mechanical strength i$ about 1.6-2 times that of annealed glass. Heat-strengthened glass has outstanding thermal stability, and its flatness is close to that of annealed glass and better than that of tempered glass.And its best advantage is with no risk of spontaneous breakage.
It is widely used in places which call for high mechanical strength and safety, such as glazed door, curtain wall, vertical window, partition wall, and partition screen close to heat source and subject to violent thermal shock.
Maximum Dimension(mm): 2440 x 3660mm
Minimum Dimension(mm): 300 x 300mm
Tempered Glass Thickness: 3 - 19mm
Heat-strengthened Glass Thickness : 4 -10mm
Conforming to GB 15763.2, Chinese Standard
Conforming to GB17841-1999,Chinese Standard
Conforming to AS/NZS2208:1996,Australian Standard
Conforming to ANSIZ 97.1-2009 American Standard