Bata alumina tinggi adalah sejenis bahan refraktori, dan komponen utama bata refraktori ini ialah Al2O3.
If the Al2O3 content is higher than 90%, it is called corundum brick. Due to different resources, national standards are not completely consistent. For example, European countries have set a minimum Al2O3 content of 42% for high alumina refractory materials. In China, the Al2O3 content in high alumina bricks is usually divided into three classes: Class I - Al2O3 content>75 peratus ; Kelas II - kandungan Al2O3 ialah 60-75 peratus ; Gred III - Kandungan Al2O3 ialah 48-60 peratus .
