China High Quality White Fused Alumina Corundum Wa Wfa for Sandblasting Refractory Abrasives, Find details about China White Aluminium Oxide, White Corundum Abrasive from High Quality White Fused Alumina Corundum Wa Wfa for Sandblasting Refractory Abrasives
Grain Usages and Types | ||||
Usage | For vitrified wheels | For organic wheels | For coated abrasives | For refractory materials |
Type | WA | WA-B | WA-P | WA-R |
Physical Characteristics | |||||
Item | Basic mineral | Crystal system | Crystal color | Mohs hardness | Density |
White aluminum oxide | α- Al2O3 | Hexagonal | White | 9 | ≥3.90g/cm3 |
Item | Micro hardness | Electrical resistivity | Grinding ability(compared with diamond as one) | Linear expansion coefficient(when 900ºC α•10-6k-1) | |
White aluminium oxide | HV2200-2300 | 1014-1016Ω•cm | 0.12 | 8.3 |
Chemical Composition | |||
GB/T 2479-2008 | |||
Type | Grit | Chemical composition (%, by weight) | |
Al2O3 | Na2O | ||
WA | F4-F80 | ≥99.10 | ≤0.35 |
F90-F150 | ≥99.10 | ≤0.40 | |
F180-F220 | ≥98.60 | ≤0.50 | |
F230-F800 | ≥98.30 | ≤0.60 | |
F1000-F1200 | ≥98.10 | ≤0.70 | |
WA-B | F4-F80 | ≥99.00 | ≤0.50 |
F90-F150 | ≥99.00 | ≤0.60 | |
F180-F220 | ≥98.50 | ≤0.60 | |
WA-P | P12-P80 | ≥99.10 | ≤0.35 ≤0.40 |
P100-P150 | ≥99.10 | ||
P180-P220 | ≥98.60 | ≤0.50 | |
P240-P800 | ≥98.30 | ≤0.60 | |
P1000-P1200 | ≥98.10 | ≤0.70 | |
P1500-P2500 | ≥97.50 | ≤0.90 | |
WA-R | 0-1mm | ≥99.00 | ≤0.50 |
1-3mm | ≥99.00 | ≤0.50 | |
3-5mm | ≥99.00 | ≤0.50 | |
5-8mm | ≥99.00 | ≤0.50 |