Tag Archives: Heat-soak testing

Fully tempered glass and spontaneous fracture

Fully tempered glass offers designers certain advantages over annealed and heat-strengthened glass, including increased strength to resist imposed loads and thermal stresses, as well as a characteristic breakage pattern in a “relatively safe” manner; however, these features come at the cost of increased optical distortion and an often overlooked risk of spontaneous breakage in-service due to nickel sulfide inclusions.

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