Chitsulo chachitsulo chimagawidwa m'magulu awiri: chitsulo chachikulu komanso chitsulo chotsika. Zitsulo zotsika pansi, mbali inayo, zimakhala ndi 0,05 ¨C 0,25% kaboni mpaka 2.0% manganese. Zitsulo zotsika kwambiri zimakhala ndi zowonjezera zokuthandizani monga Niobium, nayitrogeni, mkuwa, Chromium, Chrisdenu, miyala yamiyala yapadziko lapansi kapena ziphuphu. Pofuna kulimbikitsa chromium alloy ma flanges, zinthu monga mkuwa, Titanium, vadium ndi Niobium amawonjezeredwa ku Alloy.