... make advanced refractory material. To edit this period of brown corundum performance properties: crystal shape trigonal system ... high strength, such as performance, so use pouring steel slide gate, smelting rare metals, special alloy, ceramics, puddling ... brown corundum C or less 0.15%. Place of OriginHenan, China (Mainland)Brand NameChaoyueModel NumberCY-C18MaterialAl2O3UsageAbrasives refractory ...