Habka BadeecadaSemi GPC (SGPC) waxay ka timid lakabka dahaarka ee foornada acheson. Heerkulka garaafka wuxuu ku jiraa heerkaoo ah 1700-2500ºC. Waxay ka tirsan tahay badeecada graphitization heerkulka themedium. Waa dib-u-habayn dhaqaale leh oo lehKaarboon go'an oo sarreeya, ka kooban sulfur oo hooseeya, heerka kala diris degdeg ah iyo heerka nuugista sare.