Cov cuab yeej ntawm cov hlau ua rau cov tshuaj tiv thaiv nrog lwm cov tshuaj hu ua cov cuab yeej tshuaj ntawm cov hlau. Nyob rau hauv cov ntaub ntawv siv, hlau corrosion kuj thiab oxidation kuj (tseem hu ua oxidation kuj, uas yog tshwj xeeb yog cov kuj los yog stability ntawm hlau rau oxidation nyob rau hauv high temperatures), thiab ntawm txawv hlau thiab hlau yog xam. Cov nyhuv ntawm cov tshuaj sib xyaw ua ke ntawm cov tsis yog -hlau ntawm cov khoom siv kho tshuab thiab lwm yam. Ntawm cov khoom siv tshuaj lom neeg ntawm cov hlau, tshwj xeeb tshaj yog kev tiv thaiv corrosion yog qhov tseem ceeb heev rau corrosion qaug zog kev puas tsuaj ntawm hlau.