Isinyithi se-calcium okanye i-metallic calcium yintsimbi yesilivere-emhlophe.Isetyenziswa kakhulu njenge-deoxidizing, decarburizing, kunye ne-desulfurizing agent kwi-alloy iron kunye nemveliso ekhethekileyo yentsimbi.Ikwasetyenziswa njenge-arhente yokunciphisa kwiinkqubo zetsimbi zomhlaba ezinqabileyo eziphakamileyo.
I-calcium yintsimbi yesilivere-emhlophe, inzima kwaye inzima kune-lithium, i-sodium, kunye ne-potassium;iyanyibilika kuma-815°C.Iimpawu zeekhemikhali ze-metallic calcium zisebenza kakhulu.Emoyeni, i-calcium iya kuxutywa ngokukhawuleza, igubungele ifilimu ye-oxide.Xa ishushu, i-calcium iyatshisa, iphosa ukukhanya okubomvu kwezitena.Isenzo se-calcium kunye namanzi abandayo siyacotha, kwaye ukuphendulwa kweekhemikhali ezinobundlobongela kuya kwenzeka emanzini ashushu, ukukhulula i-hydrogen (i-lithium, i-sodium, kunye ne-potassium nayo iya kuba neekhemikhali ezinobundlobongela nakumanzi abandayo).I-calcium nayo ilula ukudibanisa ne-halogen, i-sulphur, i-nitrogen kunye nokunye.