Component of a lithium-aluminosilicate glass ceramic

A lithium aluminosilicate glass-ceramic is converted by a suitable heat treatment into a glass-ceramic having at least 80 vol .-% of keatite mixed crystals. From this precision components can be prepared, which are distinguished by a high temperature resistance and particularly favorable with components made of alloys with a low coefficient of expansion on nickel / iron-based z. B. from Invar