Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm cov khoom siv hlau hauv chaw ua haujlwm yog lawv cov qauv tsim muaj zog thiab ua haujlwm ntev. Ua los ntawm cov khoom siv hlau xws li steel, aluminium alloys, lossis stainless hlau, cov khoom no muaj tag nrho cov rigidity, tsis yooj yim deformed lossis puas, thiab tuaj yeem tiv taus qhov hnyav thiab nquag siv txhua hnub. Piv txwv li, cov ntaub ntawv hlau hlau, cov tuav ntaub ntawv, lossis lub rooj txhawb nqa kev ruaj ntseg txawm tias nyob rau hauv lub sijhawm ntev, thiab tsis tshua muaj kev tawg lossis xoob. Yog li ntawd, cov khoom siv hlau hauv chaw ua haujlwm muaj qhov zoo dua qub hauv chaw ua haujlwm uas xav tau ntev - lub sijhawm khaws cov ntaub ntawv lossis siab - siv zog.
Cov khoom siv hlau ua haujlwm feem ntau muaj cov khoom tiv thaiv zoo thiab kev hloov pauv ib puag ncig. Tom qab txau, electroplating, los yog xeb- pov thawj kev kho mob, cov khoom nto zoo tiv taus ya raws, corrosion, thiab hnav, yog li txuas nws lub neej ntev. Tib lub sijhawm, cov hlau tsis yog -flammable, muaj qee qhov kev tiv thaiv hluav taws, ua rau nws muaj ntau dua nyob rau hauv ib puag ncig uas yuav tsum tau muaj kev ruaj ntseg siab, xws li cov ntaub ntawv khaws tseg thiab cov tuam txhab nyiaj txiag. Tsis tas li ntawd, qhov zoo nkauj ntawm cov hlau tsis yooj yim nyiam cov stains, ua rau kev tu txhua hnub thiab kev saib xyuas yooj yim dua thiab pab tswj kom huv thiab txhim kho chaw ua haujlwm.