Heat-Strengthened

Heat-strengthened glass is designed for applications requiring additional strength for resistance to wind pressure and thermal stress while not being glazed in a hazardous location that requires fully tempered glass. The surface and edge compression levels are less than fully tempered glass, as specified by ASTM C 1048, yet is generally twice as strong as annealed glass of the equivalent thickness, size, and type.

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Features

BENEFITS

Break pattern similar to annealed glass decreases the probability of fall out

For use in non-safety glazing applications subjected to wind loads and thermal stresses

Typically used in spandrel glass applications

Can be laminated or back-painted

Can be used monolithically, or as part of an insulating glass unit

DESIGN CONSIDERATIONS

Heat-strengthened glass does not meet the safety glazing requirements of the American National Standards Institute (ANSI) Z97.1 American National Standard for Safety Glazing Materials Used in Buildings – Safety Performance Specifications Method of Test or the federal safety standard Consumer Products Safety Commission 16 CFR 1201 Safety Standard for Architectural Glazing Materials.

APPLICATIONS

Heat-strengthened glass is commonly used for non-vision spandrel glass applications; and vision glass for curtain wall, window wall, storefront, and other non-safety rated applications that may be subjected to wind loads and thermal stresses.