Li2O-Al2O3-SiO2 based crystallized glass

摘要

Provided is a Li 2 O-Al 2 O 3 -SiO 2 -based crystallized glass, comprising, as a composition in terms of mass%, 55 to 75% of SiO 2 , 20.5 to 27% of Al 2 O 3 , 2% or more of Li 2 O, 1.5 to 3% of TiO 2 , 3.8 to 5% of TiO 2 +ZrO 2 , and 0.1 to 0.5% of SnO 2 , and satisfying the relationships of 3.7‰¤Li 2 O+0.741MgO+0.367ZnO‰¤4.5 and SrO+1.847CaO‰¤0.5.