China High-Effect White Fused Aluminum Oxide Alumina

High-Effect White Fused Aluminum Oxide Alumina (WA/WA-B/WA-P/WA-R)
White Fused Alumina (WA) is produced by bayer alumina in an electric arc furnace at high temperatures. The product shows higher hardness and lower toughness than that of brown aluminium oxide. The materials are used to grind high carbon steel, high speed steel and chilled steel. It can also be used as polishing materials and precision founding sand, spraying and coating materials, catalyst carrier, special ceramics and super refractory materials.

Grain Usages and Types UsageFor vitrified wheelsFor organic wheelsFor coated abrasivesFor refractory materialsTypeWAWA-BWA-PWA-R

Physical CharacteristicsItemBasic mineralCrystal systemCrystal colorMohs
hardnessDensityWhite aluminum oxideα- Al2O3HexagonalWhite9≥3.90g/cm3ItemMicro hardnessElectrical
resistivityGrinding ability(compared with
diamond as one)Linear expansion
coefficient(when 900ºC α•10-6k-1)White aluminium oxideHV2200-23001014-1016Ω•cm0.128.3

Chemical CompositionGB/T 2479-2008TypeGritChemical composition (%, by weight)Al2O3Na2OWAF4-F80≥99.10≤0.35F90-F150≥99.10≤0.40F180-F220≥98.60≤0.50F230-F800≥98.30≤0.60F1000-F1200≥98.10≤0.70WA-BF4-F80≥99.00≤0.50F90-F150≥99.00≤0.60F180-F220≥98.50≤0.60WA-PP12-P80≥99.10≤0.35
≤0.40P100-P150≥99.10P180-P220≥98.60≤0.50P240-P800≥98.30≤0.60P1000-P1200≥98.10≤0.70P1500-P2500≥97.50≤0.90WA-R0-1mm≥99.00≤0.501-3mm≥99.00≤0.503-5mm≥99.00≤0.505-8mm≥99.00≤0.50

Note: Special requirements on chemical composition and other terms can be satisfied through discussion.