Heat-strengthened glass is non-safety glass. It is approximately two times stronger than regular annealed glass of the same thickness. It features a surface compression between 3,500 and 7,500 psi and an edge compression of 5,500 psi or greater. Heat-strengthened glass’ break pattern is similar to annealed glass.

Heat-strengthened glass is available from Bendheim for special applications that do not require the use of safety glass.