Mawu oyambira oyatsira (ⅱ)

5. Sulfur (s) : sulufule ndi chinthu choyipa chovuta, chomwe chimayambitsa kubisalako kwa zitsulo, kuchepetsa kuwunika kwake komanso kulimba, ndikuyambitsa ming'alu. Sulufule imathanso kuwononga magwiridwe antchito ndikuchepetsa kukana kuwonongeka. Chifukwa chake zomwe zili mu sulufur nthawi zambiri zimafunikira kukhala zosakwana 0.055%, ndi chitsulo chapamwamba zimafunikira zosakwana 0.040%. Kuphatikiza 0.08-0.20% Sulufule pa zitsulo kumatha kusintha makina ake, omwe amadziwika kuti ndi osakanizira mwaulere.

6. Chromium (Kr) : Mu mawonekedwe achitsulo ndi chilengedwe, Chromium imatha kusintha kwambiri mphamvu, kuuma ndikuchepetsa kuteteza, koma kuchepetsa chiguduli nthawi yomweyo. Chrismium imatha kukonzanso kukana kwa oxidation ndi kukana kwachitsulo, ndikupangitsa kukhala chinthu chokhacho chokongola cha chitsulo chosapanga dzimbiri ndi kutentha.

7. Nickel (NI) : Nickel imatha kusintha mphamvu ya chitsulo ndikukhalabe ndi pulasitiki yabwino komanso kuuma. Nickel ali ndi kukana kwamphamvu ku ma acid ndi alkalis, ndipo amakhala ndi dzimbiri komanso kutenthetsa kutentha pamtenthedwe kwambiri. Komabe, monga Nickel ndi gwero lochepa, zinthu zina zoyatsira ziyenera kugwiritsidwa ntchito m'malo mwa chitsulo cha nickel cromium momwe tingathere.