White Fused Alumina

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White Fused Alumina

White fused alumina consist of high grade aluminum that is processed through an electric furnace at high temperatures of up to 2,000 degrees centigrade. Also, it undergoes processing procedures such as ball mill crushing, magnetic iron separation, and screening. The resulting product retains superb purity and is extremely resilient to deformation as well as acids and alkalis. It comes in white color and is grainy, with high Al2O3 content.In contrast with brown fused alumina, the white version possesses higher levels of hardness .

Apart from being utilized for the grinding of high carbon steel, high speed steel and chilled steel, these tools can be applied as polishers, catalyst carriers, special ceramics, refractory materials, as well as spraying and coating mediums. The fused alumina can enable high rate processing without affecting the color of the processing cases. Infused with a small quantity of iron oxide, it is also ideal for sandblasting in non-ferrous procedures.

White Fused Alumina (WFA) Products
Chemical Compositions Physical Properties
Items Value of Specification (%) Items Property
Al2O3 99.55min. Color White
SiO2 0.04max. Bulk Density 1.75-1.95g/ cm³
Na2O 0.22max. True Density 3.95-3.97g/ cm³
Fe2O3 0.04max. Hardness Morse Hardness 9
Micro Hardness 21600-22600kg/mm³
CaO 0.01max. Content of Magnetic Substance 0.0021%max.
Grains Types and Grades
Usage For Vitrified Wheels For Resinoid Bond For Coated Abrasives
Type & Grade WA WA-B WA-P1
Grit No. 12#--80#, 90#--150#, 180#--240#
Grain Size 0-1mm, 1-3mm, 3-5mm, 5-8mm, 8-12mm
Available Grain No. 180#-0, 200#-0, 320#-0
Physical Chemical Performance Index
Symbol Range of the Grain Chemical Composition(%,by weight) True Density Shape of the Grain
WA F12~80 ≥ 98.50 ≤ 0.40 ≥ 3.90 Blocky
F90~150 ≥ 98.00 ≤ 0.40
F180~220 ≥ 98.00 ≤ 0.40
F230~400 ≥ 97.50 ≤ 0.50
F500~1200 ≥ 97.00 ≤ 0.60
WA-B F12~80 ≥ 99.00 ≤ 0.40 ≥ 3.90 Blocky
F90~150 ≥ 98.50 ≤ 0.40
F180~220 ≥ 98.00 ≤ 0.40
F230~600 ≥ 97.50 ≤ 0.50
WA-P1 F16~80 ≥ 99.00 ≤ 0.40 ≥ 3.90 Needle Shape
F100~150 ≥ 98.50 ≤ 0.40
F180~400 ≥ 98.00 ≤ 0.50
F500~1200 ≥ 97.50 ≤ 0.60
Note: Special requirements on chemical compositions can be satisfied through further discussion.

With outstanding self-sharpening and grinding capabilities, this medium can be used for the precision casting of superb refractory materials. Our product consists of the series WA, WA-B and WA-P1. The WA series is suitable for vitrified abrasive tools while our WA-B is targeted at resinoid bond abrasive tools and the WA-P1 specifically designed for coating abrasive tools. Each series of white fused alumina contains varying granular specifications. The finest size for our WA series is F1200, or 20μm. As a rule of thumb, the finer the size, the Al2O3 content is lower, and the hardness is lower accordingly. Clients should make informed purchases in accordance with their actual needs. It you have any inquiries regarding our products or services, please feel free to contact us.

SANDE is a China-based white fused alumina manufacturer and supplier. We provide various types of products such as black silicon carbide, stone offset grinding wheel, inox cut off wheel and walnut sand.

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