fused alumina(A, WA)
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brown fused alumina
fused aluminum oxide
Brown fused alumina is fused and crystallized under high temperature from a mixture of bauxite and other materials. It is characterized by its high hardness, good toughness and sharp sharpen size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as carbon steel, general-purpose alloy steel, annealed malleable iron and hard bronze, etc.
White Fused Aluminum Oxide has white color and a little hardness and toughness comparing with the brown fused aluminum oxide, it has stable chemical property and good insulation property.