Mabhero anoyangarara mabhora anobhururuka anogona kuyangarara pamusoro pemvura.Iwo machena-grey, akaonda uye asina mhango, uye akareruka pakurema.Iyo yakawanda density i720kg/m3 (inorema), 418.8kg/m3 (chiedza), uye saizi yechikamu ingangoita 0.1 mm, iyo nzvimbo yakavharwa uye yakatsetseka, iyo yekupisa conductivity idiki, uye refractoriness iri ≥1610℃.Kemikari yemabhero anoyangarara inonyanya kuve silicon dioxide uye aluminium oxide.Iyo ine akawanda hunhu senge akatsetseka zvimedu, hollow, huremu huremu, kusimba kwepamusoro, kupfeka kuramba, kukwira kwekushisa kwekushisa, kupisa kwemafuta, kusungirira uye kudzoreredza moto.Inoshandiswa zvakanyanya muImwe yezvigadzirwa zveiyo refractory indasitiri.