Lub plhaub aluminium yog tsim thiab cam khwb cia hauv qhov kub thiab txias. Qhov ceev ntawm aluminium plhaub yog ceev heev, thiab lub zog txias yog qhov loj, uas ua rau qee cov ntsiab lus hauv cov hlau tsis tuaj yeem hloov mus rau hauv cov ntsiab lus xav tau hauv lub sijhawm teev tseg. Vim hais tias cov khoom no muaj koob zoo li cov qauv, siab hardness thiab tsis zoo plasticity. Ntxiv mus, lub zog tensile ntawm cov txheej txheem tsim khoom no tsawg heev, thiab tsis tsuas yog daj xeb tab sis kuj tawg yuav tshwm sim ntawm qhov kub thiab txias. Lub plhaub aluminium uas tsim nyob rau hauv txoj kev no yuav muaj granular burrs. Yog tias cov burrs tsis raug tshem tawm, nws yuav muaj kev xav phem heev. Tadpole zoo li tails feem ntau nrog cov khoom zoo li no, uas tuaj yeem pom nyob rau hauv lub tshuab tsom. Ntxiv mus, cov xim ntawm xws li impurities yog grey, muaj ntau cov hlau ntsiab.
