Duplex steel S31803 machubu ndi amodzi mwa ma aloyi otchuka komanso ogwiritsidwa ntchito kwambiri padziko lapansi. Amadziwika ndi mphamvu zawo zapamwamba, kulimba komanso kukana dzimbiri. Duplex steel S31803 ndi duplex chitsulo chosapanga dzimbiri chokhala ndi 25% chromium ndi 7% faifi tambala. Ili ndi mphamvu yayikulu pakulemera kwake komanso kukana kwa dzimbiri poyerekeza ndi zitsulo zosapanga dzimbiri za austenitic monga 304L ndi 316L. Duplex Steel S31803 Tube ili ndi kukana bwino kwa pitting chifukwa chokhala ndi mpweya wochepa, womwe umathandizira kupewa dzimbiri.

Machubu amapezeka mumitundu iwiri, yopanda msoko komanso yowotcherera. Machubu opanda msoko amapangidwa popanda kuwotcherera, pomwe machubu otsekemera amakhala ndi chowotcherera kutalika kwa chubu. Mitundu yonse iwiriyi ili ndi ubwino malinga ndi zomwe mukufuna kugwiritsa ntchito, komabe machubu opanda msoko amagwiritsidwa ntchito kwambiri chifukwa cha mphamvu zawo zolemera kwambiri komanso amatha kupirira kutentha kwakukulu kuposa machubu otsekemera.