Strength of glass


typically has a tensile strength of, however theoretically it can have a strength of which is due to glass's strong chemical bonds. Imperfections on glass such as scratches and bubbles decrease the strength of glass. The imperfections on a piece of glass have a great effect on the strength of glass. The chemical composition of the glass also impacts the tensile strength of glass. The processes of thermal and chemical toughening can increase the tensile strength of glass.
Glass has a compressive strength of.

Strength of glass fiber

have a much higher tensile strength than regular glass. This is due to the reduction of flaws in glass fibers and that glass fibers have less surface area than regular glass.

Strength of fiberglass

's strength depends on the type. S-glass has a strength of while E-glass and C-glass have a strength of.

Hardness

Glass has a hardness of 6.5 on the Mohs scale of mineral hardness.