A glass article including, on an oxide basis, from 60 mol % to 74 mol % SiO2, from 7 mol % to 18 mol % Al2O3, less than or equal to 16 mol % B2O3, from 0 mol % to 6 mol % Na2O, greater than or equal to 0.5 mol % SrO, and greater than or equal to 0.5 mol % of divalent cation oxides. The glass article has a molar ratio of Al2O3:(R2O+RO) greater than or equal to 0.9, where R2O is a sum of alkali metal oxides in mol % and RO is a sum of divalent cation oxides in mol %.