Ingakanani ingcinezelo yomzimba enokuthi izitena alumina eliphezulu ukumelana?

Kuyaziwa ukuba izitena alumina eliphezulu zahlulwe ngokwamabakala amathathu ngokomxholo we-aluminiyam Al2O3. Amandla oxinzelelo lwenqanaba lokuqala lesitena se-alumina ephezulu yi-55MPa kwiqondo lobushushu begumbi, amandla oxinzelelo lwenqanaba lesibini lesitena se-alumina ephezulu yi-50MPa, kwaye amandla oxinzelelo lwenqanaba lesithathu lesitena se-alumina ephezulu yi-45MPa, 1MPa. Ilingana neekhilogram ezili-10.