Coke mmanụ a na-esepụta eserese bụ ịtụgharị mmanụ ala ka ọ bụrụ kristal carbon crystalline nwere hexagonal na oke okpomọkụ dị ihe dị ka ogo 3000 n'ime ọkụ eserese eserese, ya bụ, coke mmanụ na-aghọ graphite. A na-akpọ usoro a graphitization. A na-akpọ coke mmanụ ala a na-esi na usoro eserese eserese graphitized petroleum coke.
