Nws yog xim hlau khoom siv
Cov ntawv hlau yog xa mus rau cov khoom siv nrog luster, ductility, yooj yim kev sib tw, hloov tshav kub thiab lwm yam khoom. Feem ntau muab faib ua ob hom: cov hlau tsis huv thiab cov hlau tsis huv. Ferrous hlau muaj xws li hlau, chromium, manganese thiab lwm yam. Ntawm lawv, hlau yog qhov yooj yim kev teeb tsa cov khoom siv, hu ua" Vim tias kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev siv ntau yam ntawm cov khoom siv tshuaj tshiab thiab cov khoom siv tsis yog xim hlau tshiab, cov naj npawb ntawm cov kev hloov pauv rau cov hlau txuas ntxiv, thiab qhov kev thov rau cov hlau muaj tsawg zuj zus.