1.White corundum FEPA P grit 2. for making sanding cloth, sanding paper, ... ability Description:WAP is one kind of high pure white fused aluminium oxide grain for coated abrasives,Its ... .95Hardness 2150 Knoop scaleMagnetic Material 0.0025%Macrogrit Sizes Available (P):12, 16, 20, 24, 30, 36, 40, 50 ... -1:2006 or ISO 6344-2: 1998Key words:white fused aluminium oxide,fused brown corundum,corundum,brown fused ...