I-2205 S31803 Ukumelana nePipe Pipe ku-crevice
Ngezengezo ze-chromium, i-molybdenum ne-nitrogen yokugqwala okwenziwe kwasendaweni njengokuphaphama nokuhlaselwa kwe-crevice kuyathuthukiswa. I-Alloy 2507 inokumelana okuhle kakhulu kwe-pitting yasendaweni.
I-Duplex S32205 \ S31803 imigoqo eyindilinga ayizibuthe futhi angenzi lutho ngokwemvelo. Kodwa-ke, lokhu kugoqwe okushisayo futhi okubandayo kusetshenziswa izinto ezinhle kakhulu eziluhlaza. I-S31803 uhlelo lokufaka izinombolo oluhlanganisiwe (ama-UNS) lwensimbi yokuqala yensimbi engenacala. Uhlelo olungeyena lwakhiwa amaqembu amaningi okuhweba ngawo-1970s ukunciphisa ukudideka lapho i-alloy efanayo ibizwa ngezinto ezahlukene, futhi okuphambene nalokho. Insimbi ngayinye imelelwa yincwadi elandelwa izinombolo ezinhlanu, lapho incwadi imele uchungechunge lwensimbi, i.e. s ngensimbi engagqwali.