I-high-purity graphitized petroleum coke yenziwe nge-coke yekhwalithi ephezulu ye-petroleum ngaphansi kwezinga lokushisa elingu-2,500-3,500 ℃. Njenge-carbon material ehlanzekile, inezici zokuqukethwe okuphezulu kwekhabhoni ehleliwe, isibabule esiphansi, umlotha ophansi, i-porosity ephansi njll.Ingasetshenziswa njenge-carbon raiser (Recarburizer) ukukhiqiza insimbi yekhwalithi ephezulu, insimbi yokusakazwa kanye ne-alloy.Ingasetshenziswa futhi epulasitiki kanye nerabha njengesithasiselo.