Refractory Material, Fused Mullite Fused .melt.3Al2O3.2SiO2 Al2O3: 70-77% SiO2: 22-29% Fe2O3: 0.10%max R2O: 0.5%max RO: 0.3%max Refractoriness: 1850'C Particle bulk density: 3.03g/cm3 Linear expansion coefficient: -6.0*10-6 Glass phase content(%): 5-6% 3Al2O3.2SiO2 Phase: 94-95% Refractory Material,Fused Spinel AM-70 Al2O3: 69-76% MgO: 22-27% CaO 0.65% SiO2 0.3% Fe2O3 0.5% AM-90 Al2O3: 88-91% MgO: 8-9% CaO: 0.4% SiO2: 0.25% Fe2O3: 0.5% Grain size(mm) 3~5,1~3 ,0~1. Fine powder(mesh) 80,100,240,320,etc 80,100,240,320,etc Micro powder(祄) 3~5,5~10 3~5,5~10 If you are interested in the above products, pls keep us advised, we will provide more details for your reference. Thanks & Best Regards. C A E C, Sales Division LI LIN (Mr.) TEL:+86 371 67668728 FAX:+86 371 67625837 BIZ.E-MAIL: MSN: