Brown Fused Alumina
Brown Fused Alumina (BFA) is produced in an electric arc furnace at temperatures in excess of 2000癈. BFA is the result of fusing bauxite to reduce the silica levels and forming a material with a higher alumina content.
BFA is used in the production of bonded abrasives (grinding wheels), coated abrasives (sandpaper and cloth), blasting grain, polishing compounds, refractories, ceramics, and other applications.
TYPICAL CHEMICAL ANALYSIS
AI2o3 96.8%
TiO2 2.61%
SiO2 0.5%
Fe2O3 0.08%
Na2O 0.02%
TYPICAL PHYSICAL PROPERTIES
Crystallography: Alumina, crstallizeed in the hexagonal system. 50% monocrystalline.
Color: Brown
Specific Gravity: 3.95 Gms/cc
Knoop 100
Hardness Number: 2050
Shape: Blocky, with sharp edges
Grading: FEPA-F #42-GB-1984
Grit Sizes Available
ANSI/ISO/FEPA Grit Sizes #10, 12, 14, 16, 20, 24, 30, 36, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220, 240, 280. Also TUMBLING CHIPS #00, 0, 1, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 8 mesh.
FEPA Grit Sizes (Water Classified) F320, 360, 400, 500, 600, 800, 1000, 1200.
Optical Grades (Water Classified) #14.5, 17.5, 22.5, 25, 27.5 micron