... alumina 1) perfect polishing materials 2) precision sand mold, 3) casting,spraying 4) coating materials. Brown Fused Alumina Corundum is used as ... /m3≥3.0AP, %≥19CSS,Mpa≥800.20Mpa, RUL1600-1700PCL, %±0.216600*3hThermal conductivity W/m,k≤1.0refractoriness1790 best-selling and high quality brown ...