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IonGard® Chemically Toughened Glass


IonGard® Chemically Toughened Glass's unique combination of toughness and beauty is creating exciting new possibilities for architectural projects.

The process of chemical strengthening consists of submersing the glass for a given period of time in a special chemical bath at 460º. During the submersion cycle, the chemical ions are exchanged with the sodium ions. The larger ions "wedge" their way into the voids in the surface of the glass created when the smaller sodium ions migrate to the special solution. This ion exchange locks the surface of the glass in a state of compression and the core in compensating tension. The resulting glass is strengthened.

BCE built the largest chemically strengthening plant (3600 x 2400 x 1000mm) in Europe in 2008 for supplying curved and flat glass products that have the best optical and strength value.

  • • Chemically strengthened glass is five to eight times stronger than comparable annealed glass
  • • The surface compression of chemically strengthened glass may reach up to 100.000 PSI (690 MPa) for a thickness of approx. 0.00125" (32µm)
  • • Chemically strengthened glass retains its colour and light transmission properties after treatment
  • • Due to its manufacturing process, chemically strengthened glass has no bow or warp, optical distortion or strain pattern
  • • Chemically strengthened glass breaks into sharp fragments like annealed glass. Chemically strengthened glass cannot be used alone as safety glass; it must be laminated
Control Tower
  • Typical applications:
  • • Glass with Complex Curvatures
  • • Glazing where the optical quality is primordial
  • • Glazing where the weight is primordial
  • • Glazing where higher strength is needed compared to Heat Tempered Glass
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