"Electrical glass"; the borosilicate glass most often used for the glass fibers in conventional reinforced plastics.
A family of glasses with a calcium aluminoborosilicate composition and a maximum alkali content of 2.0%. A general purpose fiber that is most often used in reinforced plastics and is suitable for electrical laminates because of its high resistivity.
A formulation of glass designed for use in electric circuitry which has particularly good electrical and heat resistance properties. E-glass is also the most common type of glass formulation used in glass-fibre reinforcements.