... Description:WAP is one kind of high pure white fused aluminium oxide grain for coated abrasives,Its high friable, well ... sanding cloth, and sanding belt.Typical Chemical Analysis:Al2O3 99.45%Na2O 0.26%SiO2 0.13%Fe2O3 0. ... or ISO 6344-2: 1998Key words:white fused aluminium oxide,fused brown corundum,corundum,brown fused alumina,brown aluminium oxide,fused alumina white fused aluminum oxide FEPA P grit