金刚砂化学成份GB/T2478-1996 CHEMICAL COMPOSITION OF BROWN ALUMINIUM OXIDE | ||
粒度范围 Range of Grit Sizes | 化学成份%(按重量百分比) Chemical Composition%(by weight) | |
Al2O3 | TiO2 | |
4#-90# | 94.50-97.00 | 1.50-3.80 |
100#-180# | ≥93.50 | 1.50-3.80 |
220#-240# | ≥92.50 | 1.50-3.80 |