ALLOY 20 ndi aloyi yosunthika yomwe imadziwika chifukwa cha kukana kwapadera kwa dzimbiri m'malo osiyanasiyana owononga. Wopangidwa makamaka ndi faifi tambala, chromium, ndi molybdenum, ALLOY 20 amawonetsa kukana kwambiri kwa sulfuric acid, phosphoric acid, chlorides, ndi mankhwala ena ankhanza. Aloyiyi imagwiritsidwa ntchito nthawi zambiri m'mafakitale monga kukonza mankhwala, mankhwala, kukonza chakudya, ndi ntchito zam'madzi komwe kukana ma acid ndi media zowononga ndikofunikira. Ndi mawonekedwe ake abwino kwambiri amakina komanso kuwotcherera, ALLOY 20 imapereka kudalirika komanso kulimba m'malo ovuta, ndikupangitsa kuti ikhale chisankho chabwino pamapulogalamu ovuta omwe amafunikira kukana kwa dzimbiri komanso moyo wautali.