棕刚玉(brown fused alumina)：矾土通过高温电熔制成，主要成分是三氧化二铝，显棕褐色。属人造刚玉磨料。
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F17744 [Other] 耶路撒冷熔融氧化铝(brown fused alumina)
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High-Purity Brown Fused Alumina 高铝刚玉
Brown Fused Alumina A 棕刚玉
brown fused alumina powder 棕刚玉粉
brown fused alumina micropowder 棕刚玉微粉
brown n fused alumina 棕刚玉
brown n fused alumina micropowder 棕刚玉微粉
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With brown, white fused alumina compared to high hardness, toughness, showed a single particle spherical crystal, has a good multi-row cutting edge, strong anti-crushing.
与棕，白刚玉相比硬度高，韧性大，呈单颗粒球状晶体，具有良好的多棱切削刃，抗破碎较强。
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The company purchases huge volumes of earths (like brown and white fused alumina), which are their raw material manufacturing inputs.
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