La'ei sima fa'asa'o lea e masani ona aofia ai le itiiti ifo i le 90% Al2O3 o lo'o fa'aaogaina lautele i le lalolagi i aso nei.
O a matou oloa e faia mai le paʻu alumina filifilia maʻoti faʻatasi ma lapopoʻa tutusa ma le maualalo o le CaO content.Wear resistant ceramics e mafai ona faia e ala i le lomitusi faʻamago masani poʻo le faʻaogaina o le isostatic ona faʻapipiʻiina lea i le vevela maualuga i totonu o le umu.O mea e manaʻomia mo le faʻaogaina o mea faʻapipiʻi mo mea faʻapipiʻi maualuga ona o le saʻo, maualuga maualuga, maualuga alumina mea, lelei mafolafola ma mautu lelei.