FEPA F120-220 white fused alumina grit

White fused alumina FEPA F120-220 Grit is a high-purity, low-sodium α-alumina grain that is melted and crystallized with industrial alumina powder at high temperatures and then crushed. It is a particle with closely controlled particle size distribution and uniform appearance. Performance: white, α crystals over 99%, high purity, high hardness. Strong cutting force and good chemical stability. 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: F120, F150, F180, F220, F220.

Introduce of FEPA F120-220 white fused alumina grit:

White fused alumina is an aluminium oxide material created using the same process as brown fused alumina, except that higher purity alumina is used in the composition. The final product is a purer aluminium oxide used in a speciality process. White aluminium oxide contains virtually no iron content making it a safe material for applications that require minimal foreign contamination.

Physical Properties of FEPA F120-220 white fused alumina grit:

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 FEPA F120-220 white fused alumina grit:

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 FEPA F120-220 white fused alumina grit:

FEPA SIZE Average grain size(μm)
F 120 90 – 125
F150 63 – 106
F 180 53 – 90
F 220 45 – 75

White Fused Alumina(FAQ)

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

Is sample parts testing available?

MicroBlasting is extremely efficient and precise, so it is hardly likely you will need to recycle abrasive, but it is important to know the risk involved. Unlike grit or bead blasting, a MicroBlasting system can only cycle abrasive once. Abrasive should not be reclaimed and reprocessed for a second pass

What is the shelf life of fused aluminum oxide?

fused aluminum oxide products do not have a known shelf life. As long as the product is maintained in the original sealed container and stored in a cool, dry, ventilated area, our product will last indefinitely

What does the form factor (grain shape) indicate?

The description of the grain shape can range from “angular” to “acicular” to “spherical”. When the value of the dimensionless form factor is 1, the grain is spherical. The smaller the form factor, the pointier the grain.

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How is fused alumina obtained?

Raw materials containing aluminium oxide are electrothermally melted at a reaction temperature of more than 2,000 °C to produce the various fused aluminas. Different starting materials are used depending on the desired type of fused alumina. For instance,