... 0.0023%.....color white ……hardness(mohs) 9…….ture density 3.9Marterials: aluminaWhite aluminium oxide is electrically fused in the furnace ... #,1500# 2000#,2500#,3000#,4000#Refractory grade:1-0mm,3-1mm,5-3mm,5-8mm -200mesh,-240mesh,-320mesh PurposeSpecificationChemical ... .0Melting point(°C)2250Maximum service temperature(°C)1900Ture density(g/cm3)3.9Hexing is willing to accept all the competition from ...