Tempering, the final and most important step in glass fabrication, creates finished glass that is 4 to 5 times stronger than ordinary or annealed glass. Unlike annealed glass, which can break into jagged shards, tempered glass breaks into tiny, relatively harmless pieces that are usually round in shape. In the tempering process, glass is heated to 650°C and then carefully cooled in a monitored procedure called quenching, which cools the outer surfaces of the glass much more rapidly than the center. When the center of the glass cools, it tries to pull back from the outer surfaces. As a result, the center remains in tension, and the outer surfaces compress, giving tempered glass its strength.
Dillmeier Glass is a SGCC-certified tempering company. We can temper from 1/8” up to 1” glass and easily accommodate short lead times. We test glass hourly during production and send samples to independent laboratories on an ongoing basis, to ensure our process meets SGCC compliance.
People have been making glass for thousands of years. While this material can be naturally created without human interference, the first indication of a person making glass dates back to around 3,500 BC.