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Features and Applications

Up to 500% stronger than annealed glass and therefore is more resistant to thermal breakage and can withstand greater windloads.
on breaking it fragment into many small harmless pieces unlike annealed glass.
can be used within a temprature range on minus 70° C to plus 300° C (surfaces temperature should not exceed 250° C if other surface is lower than 0° C ambient)
recommended for door, side and low lites, frameless entries, balustrades, shower, bath screen panels and furniture.
available in thicknesses 3 - 19 mm.


Tempered Glass Restrictions

Obvious restrictions such as furnace size (maximum size) and distance between rollers (minimum size) exist, although larger, smaller and thicker sizes are available on longer leadtimes. However, hole and cut-out positioning and their size are critical to the successful toughening of a panel. Incorrect hole and cut-out design creates excessive stresses and weaknesses that may result in breakage during the toughening process. A more dangerous scenario is that the panel fails on or after installation.


Maximum and minimum size

  • Maximum Size
    Up to 5100mm high and up to 2500mm wide. Special conditions do apply.
  • Minimum Size
    If the glass thickness 153 mm to the smallest panel of glass can be toughened is 20 cm x 25 cm.
    If the glass thickness is 4 mm up to 19 mm so the smallest panel of glass can be toughened is 10 cm x 25 cm.

Edgework Guidelines

Minimum Edgework

Clean cut edges for toughened glass is not permissible. Minimum finished should be standard arris, flat grind and flat polished or as detailed in "Edgework Profiles". A flat ground edge is recommended for 15mm thicknesses and over as a minimum.

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