304 306 uamea u'amea lelei oxidation tetee, corrosion tetee, e mafai ona faaauau pea ona galue i le vevela maualuga, e lelei le maualuga o le vevela.Faʻaaogaina i le suauu, eletise, vailaʻau, vailaʻau, ie, meaʻai, masini, fausiaina, malosiaga faaniukilia, aerospace, militeri ma isi pisinisi.