Glass composition

Abstract

The invention relates to a glass composition, in particular a flat glass composition, comprising the following components in weight percentages relative to the total weight of the composition: -60% to 70% SiO2; -2% to 18% Na2O; -8% to 28% CaO; -1% to 9% MgO; -0% to 2% Al2O3; -0% to 0.5% K2O, wherein the sum of the CaO and MgO contents is 14% to 32%, preferably with a sum of the Na2O, CaO and MgO weight contents ranging from 30% to 37%, and an MgO / (Na2O+CaO+MgO) ratio greater than 0.16. The invention also relates to a method for preparing flat glass comprising a composition according to the invention, and also to a sheet of glass with a composition according to the invention.