Brown Fused Alumina A Al2O3: 95.5% min SiO2: 0.8% max Fe2O3:0. ... TiO2:2.3% maxCaO: 0.4% max Brown Fused Alumina A :Properties: The bauxite, coke (anthracite) as main raw material, by ... metal, such as a variety of general-purpose steel, malleable iron and hard bronze, etc. It can also create high level refractory ... ≥70≤4.3≤1.53.85 Superior Brown Fused Alumina A