... fused alumina(WA)Al2O3 99.53%...........NaO 0.3%.........Fe2O3 0.1%......... Magnetic material content 0.0023%.....color white ... it are suitable for grinding high-speed,high carbon steel ,etc.It also can be used as materialsfor ... #,1200#,1500# 2000#,2500#,3000#,4000#Refractory grade:1-0mm,3-1mm,5-3mm,5-8mm -200mesh,-240mesh,-320mesh ... cooperation with us.. Refractory White Fused Alumina 1-0mm.3-1mm.5-3mm