White fused alumina FEPA grain F24-F100

White fused alumina FEPA grain F24-F100 was made from high-quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3. The white alumina produced in titling electric arc furnaces has high purity, hardness, bulk density, low porosity, good volume stability, and thermal shock resistance. As the most commonly used corundum in the industry, white fused alumina grain has a lengthy application history because of its high hardness and good self-sharpening advantages. The European FEPA (Federation of European Producers of Abrasives) is an applied particle size specification for abrasives and refractory materials. The particle size numbers are: F24, F30, f36, F40, F46, f54, F60, F70, F80, f90, F100.

Introduce of white fused alumina FEPA grain F24-F100:

White Fused Alumina is from the fusion of high purity Bayer processed alumina in electric arc furnaces at about 2,050 degrees Celsius. White fused alumina has the features of well-distributed particle size composition, low magnetic substance content, high bulk density and toughness, good toughness, high cleanliness, etc. The white fused alumina is recommended for grinding high carbon steel, high-speed steel, and chilled steel. It can also work for blasting, lapping, polishing media, and laminating flooring materials.

Physical properties of white fused alumina FEPA grain F24-F100:

Melting point(℃) 2250
Bulk density(g/cm3) 1.80~1.95
Mohs Hardness 9.0min
Whiteness 85min
Size 120, 150, 180, 220

Chemical composite of white fused alumina FEPA grain F24-F100:

Items WAS WAN
Al2O3 99.5%min 99.70%min
SiO2 0.10%max 0.10%max
Fe2O3 0.10%max 0.08%max
Na2O 0.30%max 0.10%max

Particle distribution of white fused alumina FEPA grain F24-F100:

FEPA SIZE Average grain size(μm)
F 10  1700 – 2360
F 12  1400 – 2000
F 14   1180 – 1700
F16   1000 – 1400
F 20  850 – 1180
F 22   710 – 1000
F 24  600 – 850
F 30  500 – 710
F 36  425 – 600
F 40  355 – 500
F 46  300 – 425
F 54 250 – 355
F 60  212 – 300
F 70  180 – 250
F 80  150 – 212
F 90 125 – 180
F 100  106 – 150

White Fused Alumina(FAQ)

How do i know what abrasive is best for my application?

An abrasive’s shape, hardness, and particle size really determine the effectiveness of a MicroBlasting application. Each application is unique, and abrasive selection depends on the composition of the targeted part and the application’s desired result. See our Abrasive Media Selection Guide to choose the most appropriate abrasive for your application.

What is fepa and what does it do?

FEPA is the Federation of European Producers of Abrasives. Its mission is to develop and publish standards, documents and comprehensive safety instructions for the abrasive industry. Abrasive grain sizes are produced and sold according to the FEPA standard, among other things. This is to ensure that a consistent quality for

What is the hardness?

Hardness is rated from A-Z with ‘A’ being the weakest bond and ‘Z’ being the strongest.  A weak bond is preferred for grinding harder materials while  a stronger bond is desired for softer materials.  A typical weak bond for steel would be in the ‘F, G or H’ range.  A

What is the best way to store my abrasives?

The best way to have abrasive products retain maximum performance and work life is to store them properly. The bonding and backing materials used in abrasives are very sensitive to changes in temperature and humidity. Abrasives are best stored at temperature levels of 60 to 80 degrees Farenheit and a

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