1Al2O3 99% 2NAO 0.3% 3Fe2O3 0.1% 4Hardness(mohs) 9 5 Ture density 3.9 White aluminium oxide/white fused ... 1200#,1500# 2000#,2500#,3000#,4000#Refractory grade:1-0mm,3-1mm,5-3mm,5-8mm -200mesh,-240mesh,-320meshPurposeSpecificationChemical Composition(%)Magnetic material content ... 9.0Melting point(°C)2250Maximum service temperature(°C)1900Ture density(g/cm3)3.9Hexing is willing to accept all the ...