Alumina ufa ndi inorganic mankhwala ndi mankhwala chilinganizo Al2O3.Ndi chinthu cholimba kwambiri chokhala ndi malo osungunuka a 2054 ° C ndi malo otentha a 2980 ° C.Ndi kristalo wa ionic womwe umatha kutentha kwambiri ndipo umagwiritsidwa ntchito nthawi zambiri popanga zinthu zokana.