*粒度砂型号及堆积密度Grain size & bulk density 粒度SIZE 堆积密度B.D.(g/cm3) 粒度SIZE 堆积密度B.D.(g/cm3) 12 2.02-2.10 54 1.75-1.87 14 2.00-2.07 60 1.70-1.82 16 1.97-2.04 70 1.68-1.80 20 1.96-2.02 80 1.66-1.78 22 1.95-2.01 90 1.64-1.76 24 1.90-2.00 100 1.62-1.74 30 1.88-1.98 120 1.61-1.73 36 1.86-1.96 150 1.60-1.72 40 1.83-1.93 180 1.58-1.68 46 1.6-1.88 220 1.56-1.67*化学成分Chemical component 用途Purprose 规格Specification 主要化学成分(%)Chemical Composition(%) 磁性物(%)Magnetic material content(%) Al2O3 Fe2O3 SiO2 TiO2 磨料磨具For abrasive F 12#-80# ≥95.5 ≤0.2 ≤1.0 2.2-3.0 ≤0.02 90#-150# ≥95 ≤0.02 180#-240# ≥94.5 ≤0.3 ≤1.2 2.2-3.0 ≤0.02