What Is Heat-Treated Glass?
US Glass Tempering produces heat-treated glass that delivers enhanced strength, safety, and thermal resistance. The process involves heating precisely cut glass to approximately 1,150°F, then rapidly cooling it using high-pressure air — creating surface compression and inner tension that make the glass significantly stronger.
This treatment improves durability, increases resistance to impact and temperature change, and defines controlled breakage patterns for safety applications.
Types of Heat-Treated Glass
Annealed Glass (AN) — The Starting Point
Annealed glass is untreated, standard glass. While suitable for many interior applications, it breaks into large, sharp shards when damaged, posing safety concerns. It serves as the foundation for most fabricated and tempered products.
Fully Tempered Glass (FT) — Strength You Can See
Fully tempered glass from US Glass Tempering is up to four times stronger than annealed glass. When broken, it fractures into small, blunt pieces, significantly reducing injury risk.
This makes it the superior choice for doors, railings, partitions, storefronts, and shower enclosures, where safety and performance are paramount.