I-calcined needle coke ihluke kakhulu kune-sponge coke ngesakhiwo sayo, inobuningi obukhulu, ubumsulwa obuphezulu, amandla aphezulu, okuqukethwe kwe-sulfur okuphansi, amandla aphansi okubamba ukushisa, i-coefficient yokukhulisa ukushisa ephansi kanye nokumelana okuhle nokushaqeka kokushisa.
