ʻO ke kiʻekiʻe kiʻekiʻe calcined alumina oxide pauda ua calcined i loko o ka crystalline type alpha-type alumina huahana ma kahi mahana kūpono;calcined e calcined α-type alumina ma ke ʻano he mea maka, i hana ʻia e ka wili pōlele ʻo Alumina pauka maikaʻi.He kiʻekiʻe ka helu heheʻe, ka ikaika mechanical maikaʻi, ka paʻakikī, ka resistivity kiʻekiʻe, a me ka conductivity thermal.Hiki ke hoʻohana nui ʻia i nā lako uila, nā seramika i kūkulu ʻia, nā mea refractory, nā mea pale lole, nā mea polishing, a me nā ʻoihana ʻē aʻe.