I-Alloty 20 (Aloy 20) yi-Austitic esekwe i-Iron-Altithic Alloty equlethwe ukuxhathisa i-sulfuric sciasion. Inokuchasana ngokugqwesileyo kwimeko ye-sulfuric acid yosulelo; Inokungaxhathisa okuqatha kwi-phosphoric acid, i-nitric acid kunye ne-chloride fide, i-chloride yoxinzelelo i-comrosion, imbiza i-corrosion kunye ne-creas. Ke ngoko, i-Alloty 20 inesabelo sokulwa, Inoluhlu olubanzi lwezicelo: ezinje: ikhemikhali, ukutya, iyeza, ukuveliswa kwamandla kunye nemizi-mveliso yeplastiki iya kuyisebenzisa. Ukuxhathisa ekupheliseni i-colososion kunye ne-chloride yosulelo, uxinzelelo lweengxaki zokuqhekeza, njl njl. I-Aloby 20 ihlala isetyenziswa.