Hnav-cov alloys tiv taus yog cov alloys tsim los txhim kho qhov hnav tsis kam ntawm cov cuab yeej siv tshuab thiab yog cov khoom siv feem ntau siv rau qee yam kev sib txhuam. Lawv muaj ntau daim ntawv thov, suav nrog ntau yam cuab yeej steel, bearing steels, thiab siab -manganese steel thiab ntau yam hnav- cam khwb cia hlau siv hauv pob zeb drilling thiab crushing machinery.
Hnav-cov hlau tsis muaj zog yog siv rau hauv cov mining tej yam kev mob uas cuam tshuam rau abrasive hnav nyob rau hauv tej yam kev cuam tshuam loads. Lawv xa mus rau cov hlau nrog lwm cov ntsiab lus txhob txwm ntxiv kom ua tau raws li cov kev xav tau tshwj xeeb. Cov ntsiab lus ntxiv los txhim kho hardness, toughness, hardenability, thiab lwm yam kev qhia tau zoo yog hu ua alloying ntsiab. Piv txwv ntawm cov ntsiab lus alloying suav nrog chromium (Cr), npib tsib xee (Ni), molybdenum (Mo), tooj liab (Cu), silicon (Si), manganese (Mn), vanadium (V), titanium (Ti), tsis tshua muaj ntiaj teb cov ntsiab lus (Re), tungsten (W), thiab boron (B). Txawm tias qee qhov teeb meem, xws li sulfur (S) thiab phosphorus (P), tuaj yeem hu ua alloying ntsiab nyob rau hauv tej yam kev mob tshwj xeeb kom tau raws li cov kev cai tshwj xeeb. Hnav-cov hlau tsis muaj zog yog dav faib ua tsib pawg: austenitic manganese steel, nruab nrab-chromium steel, qis- alloy steel, thiab graphite steel, txhua qhov tsim nyog rau kev sib txawv mining.
