堆积密度1.53~1.99g/cm3,颗粒密度3.95~4.0g/cm3 ,基本粒度为45-55%,努谱硬度 2000 - 2200 Kg/mm2,莫氏硬度 9.0
硅99.95%,铝0.006%,铁0.0053%,镁0.0012%,钙0.009%,钾0.0069%,白度96
硅99.26%,铝0.14%,铁0.26%,钠0.13%
硅99.2%,铝0.37%,铁0.316%
硅99.5%,铁0.05%
40-140目,铁100ppm
4N高纯石英砂,70-140目,硅99.991%,白度93