S31803 ndiyo yakabatana nhamba yehurongwa (uns) dhizaini yeiyo yepakutanga dupplex simbi yesimbi isina tsvina. Iyo isina hurongwa yakagadzirwa nemapoka mazhinji ekutengeserana muma1970 ekuderedza kuvhiringidzika apo iyo fananidzo iyo yakafanana yainzi akasiyana zvinhu, uye zvinopesana. Simbi imwe neimwe inomiririrwa netsamba inoteverwa nenhamba shanu, uko tsamba inomiririra simbi simbi, i..E. s ye simbi isina tsvina.
Zvepamhepo zvigayo zvinyoronyoro zvinoda kuderera mavara ezvinyorwa zvisina kukodzera kurwisa kwakakwana. Zvichienderana ne 22% Chromium Zvemukati, ivo vane yakasanganiswa Austenitic: Ferritic micriticture iyo inopa simba rakakura, kurwisa uye kubhadhara-mutengo.
Alloy 20 (Alloy 20) is a iron-yakavakirwa Austenitic Austenitic Alloy yakagadziriswa kuramba sulfutic acid corrosion. Iyo ine simba rakanakisa kune sulfuric acid corrostion; Iyo ine simba rakasimba kuPhosphoric acid, nitric acid uye kloride nharaunda, chloride kushamwaridzana, pundting corrosion uye kupaza crosion. Naizvozvo, Alloy 20 ane zita remidhiya-corrosion alloy; Iyo ine huwandu hwakawanda hwekushandisa: sekuti: makemikari, chikafu, mushonga, magetsi emagetsi uye maindasitiri epurasitiki anoishandisa. Kuti udzivise kudzivisa kudzora corrosion uye chloride corrosion, kusagadzikana kwekoramu kupaza matambudziko, etc., Alloy 20 inowanzoshandiswa.