... ,better cutting Description:WAE-17 is a kind of white fused alumina electrically fused in arc furnace with high ... .95Hardness 2150 Knoop scaleMagnetic Material 0.0025%Grain Sizes Available (F):12, 14, 16, 20, 22, 24, 30, 36, ... 80, 90, 100, 120, 150, 180, 220.Microgrit Sizes Available (F):240, 280, 320, 360, 400, 500, 600, 800, 1000, ... 42-1:2006 or ISO 8486-1. Powder White Fused Aluminum Oxide/WA/WFA