white fused alumina is electrically fused in arc furnace with high grade bayer's process alumina as raw material. it has higher hardness and slight lower toughness comparing with brown fused alumina. it is also characterized by its high purity, ability of self-sharpening, better cutting, less heat emit, higher efficiency, acid and alkali resistance, good thermal stability. abrasives tools made of it are suitable for grinding high-speed, high carbon steel, etc. it also can be used as materials for grinding and polishing, precision casting, spraying and coating, medium body for chemical industry, special ceramics and high-grade refractory materials, etc. purpose specification chemical composition(%) for abrasive grit size al2o3 nao cao f12-f80 99min 0.5max 0.4max f90-f150 98.5min 0.6max 0.4max f180-f240 98.2min 0.7max 0.4max w1-w63 97.5min 0.8max 0.5max for refractory grit size al2o3 nao cao 0-1mm 99min 0.5max 0.4max 1-3mm 99min 0.5max 0.4max 3-5mm 99min 0.5max 0.4max 5-8mm 99min 0.5max 0.4max 8-12mm 99min 0.5max 0.4max 0-180mesh 98.5min 0.5max 0.4max 0-220mesh 98.5min 0.5max 0.4max 0-320mesh 98.5min 0.5max 0.4max if you have any requirement, please don't hesitate to inform us. melodyyangmei(at)hotmail.com.hope we can establish stable long terms business relationship with each other. sales manager: melody yang tel:86-379-65285887-804 mobile phone:13849906514 fax:86-379-65285889 http://www.ycrs.com.cn