0-1mm1-3mm3-5mm5-8mm粉紅剛玉
低鉻-Low:
Cr2O3:0.20-0.45%
Al2O3:≥98%
Na2O:最大0.6%
中間:
氧化鉻 0.45-1%
Al2O3:≥97.8%
Na2O:最大0.6%
高的:
氧化鉻 1-2%
Al2O3:≥96.5%
Na2O:最大0.7%
鉻剛玉理化性質:
真密度3.90g/cm3
堆積密度1.40-1.91 g/cm3
顯微硬度2200-2300 g/mm2
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