Glass typically has a tensile strength of 7 megapascals (1,000 psi).[1] However, the theoretical upper bound on its strength is orders of magnitude higher: 17 gigapascals (2,500,000 psi). This high value is due to the strong chemical Si–O bonds of silicon dioxide. Imperfections of the glass, such as bubbles, and in particular surface flaws, such as scratches, have a great effect on the strength of glass and decrease it even more than for other brittle materials.[2][1] The chemical composition of the glass also impacts its tensile strength.[3] The processes of thermal and chemical toughening can increase the tensile strength of glass.[4]
Glass has a compressive strength of 1,000 megapascals (150,000 psi).[5][6]
^ abKasunic, Keith J. (2015-03-02). Optomechanical Systems Engineering. John Wiley & Sons. ISBN 9781118809907.
^Lehman, Richard (November 24, 2017). "The Mechanical Properties of Glass" (PDF). Retrieved November 24, 2017.
^Bos, Freek; Louter, Christian; Veer, Fred (2008). Challenging Glass: Conference on Architectural and Structural Applications of Glass, Faculty of Architecture, Delft University of Technology, May 2008. IOS Press. ISBN 9781586038663.
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