Flake graphite yog ntuj siv lead ua graphite, nws cov duab zoo li ntses phosphorus, yog hexagonal crystal system, yog txheej txheej, muaj qhov kub zoo tiv taus, hluav taws xob, kev ua kom sov, lubrication, yas thiab kua qaub thiab alkali tsis kam ua haujlwm.