Refractoriness
Zvidhinha zvakakwirira-zvealuminium zvine kusimba kwepamusoro pane zvidhinha zvefireclay kana semi-zvidhinha zvesilika, zvinosvika 1750–1790 degree; zvinoiswa muboka re-giredhi refractory zvinhu zvakakwirira.
Refractoriness pasi pemutoro
Nekuda kwehuwandu hwazvo hweAl₂O₃ uye hutsvina hushoma-zvinoita kuti pasave nekashoma-kunyunguduka kwezvikamu zvegirazi-zvakakwirira{3}}zvigadzirwa zvealuminium zvinoratidza kusadarikidza kwepamusoro pasi pemutoro kupfuura zvidhinha zvemoto. Nekudaro, nekuti iyo mullite makristasi haagadziri yakavharira network chimiro, refractoriness yavo pasi pemutoro inoramba yakaderera pane iyo silica zvidhinha.
Slag resistance
Nezvepamusoro zveAl₂O₃, zvidhinha zvakakwirira-zvealuminium zvinoita sezvisingachinjike uye zvinokwanisa kudzivirira kukukurwa neasidhi uye maslags. Nekudaro, nekuda kwekuvapo kweSiO₂, kuramba kwavo kune basic slag kwakati kushoma pane kuramba kwavo kune acidic slag.