Lub hardness ntawm aluminium alloy raj yog qhov tsawg, feem ntau yog vim cov yam ntxwv ntawm txhuas. Aluminium muaj qhov ntom ntom tsawg, ib qho loj coefficient ntawm thermal expansion, thiab siab thermal zog, tab sis tsis muaj zog thiab lub zog. Txawm li cas los xij, qhov zoo ntawm aluminium alloy kav yog lub teeb yuag, muaj zog tiv thaiv corrosion thiab tiv thaiv oxidation, thiab tsis yooj yim rau xeb, yog li lawv tau dav siv hauv qee qhov tshwj xeeb.
Lub hardness ntawm galvanized yeeb nkab yuav siab dua li ntawm aluminium alloy yeeb nkab, vim hais tias muaj ib txheej ntawm zinc txheej rau sab hauv thiab sab nrauv ntawm cov yeeb nkab galvanized, uas muab kev tiv thaiv zoo dua rau cov yeeb nkab steel, thiab tseem tuaj yeem ua rau lub hardness ntawm cov yeeb nkab. steel yeeb nkab thiab txhim khu kev hnav tsis kam ntawm cov yeeb nkab steel. Galvanized kav kuj muaj corrosion kuj zoo thiab kav ntev. Cov yam ntxwv no ua rau cov kav dej galvanized dav siv hauv kev tsim kho, tshuab, tsheb thauj mus los thiab lwm yam.
Aluminium alloy yeeb nkab thiab galvanized yeeb nkab yog ob qho tib si cov khoom siv yeeb nkab, aluminium alloy yeeb nkab yog qhov sib dua, tab sis qhov hardness yuav qis dua, tsis nyuaj li cov yeeb nkab galvanized. Daim ntawv thov sib txawv yuav tsum xaiv cov khoom siv yeeb nkab uas tsim nyog raws li qhov xav tau tiag tiag. Thaum ua kom ntseeg tau tias cov khoom ua tau raws li qhov yuav tsum tau ua, lwm yam xws li tus nqi, qhov hnyav, thiab lwm yam yuav tsum tau txiav txim siab.