Cov kav hlau tsis muaj steel muaj ntau cov chromium, thiab qee qhov kuj tseem muaj ntau cov npib tsib xee thiab qee qhov nyiaj ntawm titanium. Lub hom phiaj ntawm chromium yog ua kom cov hlau tiv taus corrosion. Nickel yog lub ntsiab alloying ntsiab uas tsim austenitic stainless hlau, tab sis nws cov nyhuv tag nrho tsuas yog siv tau thaum ua ke nrog chromium. Yog tias siv cov nickel ntshiab, cov pa roj carbon tsawg tsawg yuav tsum muaj cov qauv ntshiab austenite ib-theem thiab cov ntsiab lus nickel yuav tsum siab dua 24%. Qhov tseeb, thaum cov ntsiab lus npib tsib xee yuav tsum ncav cuag 27%, qhov kev tiv thaiv corrosion ntawm cov kav dej stainless hlau tau zoo dua qub. , yog li tsis muaj npib tsib xee raws li cov khoom siv alloying hauv cov kav hlau stainless.
Cov hlau tsis zoo feem ntau yog cov hlau tsis muaj austenitic, xws li 304, 316L, 321, thiab lwm yam. Cov ntsiab lus carbon tsawg, tab sis cov ntsiab lus alloying muaj ntau dua 20%, suav nrog 18-20% chromium, 8-10 % Ni, thiab vanadium, molybdenum, titanium thiab lwm yam khoom. Stainless hlau yog siv rau corrosive lub hom phiaj. Hauv kev tshaj xov xwm, tshwj xeeb tshaj yog nyob rau hauv kev lag luam xws li zaub mov, tshuaj, tshuaj niaj hnub thiab tshuaj pleev ib ce uas muaj kev xav tau ntau dua ib puag ncig, lawv feem ntau yog siv. Tau kawg, nws kuj tau siv dav hauv kev lag luam tshuaj. Txawm li cas los xij, austenitic stainless hlau ntshai ntawm chloride ions thiab muaj kev tswj nruj heev ntawm cov tshuaj chloride ions hauv dej hauv ib puag ncig.
