Pink Fused Alumina
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Available Grain Sizes
| Fraction | 0-1mm 1-3mm 3-5mm 5-8mm | |
| Fine Powder | 200#-0 320#-0 | |
| Grit | 16# 20# 24# 30# 36# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220# 240# | |
| Micro Powder | JIS Standard | #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000 |
| FEPA Standard | F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 | |
Typical Chemical Analysis
| Chemical Composition | Low Chromium | Medium Chromium | High Chromium | ||||||
| Al2O3 (%) | Cr2O3 (%) | Na2O (%) | Al2O3 (%) | Cr2O3 (%) | Na2O (%) | Al2O3 (%) | Cr2O3 (%) | Na2O (%) | |
| F12-F80 | ≥98.5 | 0.20-0.45 | ≤0.50 | ≥98.2 | 0.45-1.00 | ≤0.55 | ≥97.40 | 1.00-2.00 | ≤0.55 |
| F90-F150 | ≥98.5 | 0.20-0.45 | ≤0.55 | ≥98.2 | 0.45-1.00 | ≤0.60 | ≥97.00 | 1.00-2.00 | ≤0.60 |
| F180-F220 | ≥98.0 | 0.20-0.45 | ≤0.60 | ≥97.8 | 0.45-1.00 | ≤0.70 | ≥96.50 | 1.00-2.00 | ≤0.70 |
Typical Physical Properties
| Basic Mineral | Crystal Size | True Density | Bulk Density | Knoop Hardness |
| α-Al2O3 | 600-800μm | ≥3.90 | 1.40-1.91g/cm3 | 2200-2300kg/mm2 |
Manufacturing Process
The manufacturing process of pink fused alumina mirrors that of white fused alumina, with the addition of chromium oxide during smelting, resulting in a light purple or rose hue. The introduction of Cr3 in pink fused alumina enhances its toughness compared to white fused alumina while maintaining similar hardness. When processing tougher materials, pink fused alumina demonstrates higher efficiency than white fused alumina, yielding superior surface smoothness. Ideal for processing high-toughness materials such as quenched steel, alloy steel, precision measuring instruments, and instrument components that demand high surface finish requirements.