亞白剛玉為高品質人造剛玉。由于化學成份和物理性能與白剛玉接近，故稱為亞白剛玉，該產品具有白剛玉的硬度，同時兼有棕剛玉的韌性，是較為理想的高級耐火材料和研磨材料，體積密度≥3.8g/cm,耐火度大于1850℃。

Vice-white fused alumina is high-class brown aluminumoxide. Its name is from the chemical composition and the physical properties, which are close to white , fused alumina It is as hard as white fused alumina , as tough as brown fused alumina. It is a kind of high-grade refractory products and abrasives Volume Density 3.8g/cm,the degree of Refractory 1850