GLASS SHEET

摘要

The invention relates to a glass sheet which has a lithium aluminosilicate composition including at most 1 wt % of sodium oxide and the thickness of which is at most 2 mm and which has a surface area under compression obtained by ion exchange and a central area under tension such that the bending strength in a 'ring on tripod' test is at least 50 MPa after Vickers indentation under a load of 120 N.