White aluminum oxide: 1. For abrasives and sandblasting 2. High Al2O3 Content 3. Refractory matter 4. High Hardness
White aluminum oxide has white color and a little higher hardness and toughness comparing with the brown one. The grinding tools made of this material are suitable for fine grinding of high carbon steel, high-speed steel and stainless steel, Abrasive powder of finer grit size, can also be used for precision casting and high-grade refractory.
1. Grain types and symbol:
Usage | For Vitrified Wheels | For Resinoid bond | For Coated abrasives |
Symbol | WA | WA-B | WA-P1 |
2. Physical chemical performance index:
Symbol | Range of the grain | Chemical composition (%) | True density | Shape of grain | |
Al2O3 | Na2O | ||||
WA | F12-80 | ≥98.50 | ≤0.40 | ≥3.90 | Equaled Volume |
F90-150 | ≥98.50 | ≤0.40 | |||
F180-220 | ≥98.20 | ≤0.40 | |||
F230-400 | ≥98.00 | ≤0.50 | |||
F500-1200 | ≥97.50 | ≤0.60 | |||
WA-B | F12-80 | ≥99.00 | ≤0.40 | ≥3.90 | Equaled volume |
F90-150 | ≥98.50 | ≤0.40 | |||
F180-220 | ≥98.00 | ≤0.40 | |||
F230-600 | ≥97.50 | ≤0.50 | |||
WA-P1 | P16-80 | ≥99.00 | ≤0.40 | ≥3.90 | Equaled volume needle form |
P100-150 | ≥98.50 | ≤0.40 | |||
P180-400 | ≥98.00 | ≤0.50 | |||
P500-1200 | ≥97.50 | ≤0.60 | |||
3. Chart for grit size and magnetic contents of China GB/T2479-1996:
Grit (FEPA F.P) | Magnetic contents ≤ % | |
WA | WA-B,WA-P | |
12-30 | 0.0023 | 0.0040 |
36-60 | 0.0022 | 0.0035 |
70-120 | 0.0021 | 0.0030 |
150-220 | 0.0016 | 0.0025 |
High Al2O3--White Aluminum Oxide(Powder)
