White fused alumina micro grits powder FEPA & JIS

White fused alumina micro grits powder FEPA & JIS using the high-quality fine powder, further broken and shaped by a pipe mill and removed iron, acid pickling and moisture by magnetic separation. White fused alumina micro grits are produced by the grinding & classification of selected Macro grain feedstock in advanced milling and classifying facility. The sizes are controlled and tested using an x-ray sedimentation particle size analyzer and particle counter. Micro grits generally conform to the FEPA (Federation of European Producers of Abrasives) specifications. Also, the plant supplies JIS and other customer-specific sizes as required.

Introduce of white fused alumina micro grits powder FEPA & JIS:

White fused alumina micro-powder is a high-quality α-alumina powder as a raw material. It also has high purity, good self-sharpening, acid and alkali resistance, high-temperature resistance, thermal state performance stability, and excellent insulation. White fused alumina powder is suitable for making bonded and coated grinding tools; wet or dry, sandblasting, ultra-fine grinding and polishing in the crystal and electronic industry; and making advanced refractory materials and materials with high tensile strength. Also, it can be used as a catalyst, insulator, precision casting sand, etc. White fused alumina powder is also widely used in the emerging wood flooring industry, circuit boards, special coatings, polishing waxes, etc. Compared with ordinary micro-powder, our fine powder and ultrafine micro-powder properties are more concentrated in particle size distribution, making uniform surface and better gloss performance of polished wafer.

Physical properties of white fused alumina micro grits powder FEPA & JIS:

Melting point(℃) 2250
Bulk density(g/cm3) 1.80~1.95
Mohs Hardness 9.0min
Whiteness 85min
Size FEPA F230-F1200 & JIS #240-#10000

Chemical composite of white fused alumina micro grits powder FEPA & JIS:

Item Al2O3 % Fe2O3 % max SiO2 % max Na2O % max
WAM-S 99.5 0.05 0.10 0.35
WAM-A 99.7 0.05 0.10 0.06

Particle distribution of white fused alumina micro grits powder FEPA

FEPA SIZE Average grain size (μm)
ds3 (μm) max             ds50 (μm)       ds94 (μm) min
F 230 77                        55.7 ± 3.0 38
F 240 68                        47.5 ± 2.0 32
F 280 60                                39.9 ± 1.5 25
F 320 52                          32.8 ± 1.5 19
F 360 46                          26.7 ± 1.5 14
F 400 39                           21.4 ± 1.0 10
F 500 34                           17.1 ± 1.0 7
F 600 30                            13.7 ± 1.0 4.6
F 800 26                            11.0 ± 1.0 3.5
F 1000 23                             9.1 ± 0.8 2.4
F 1200 20                             7.6 ± 0.5 2.4
Particle distribution of white fused alumina micro grits powder JIS:
Abrasives micro size distribution Japan standard JIS#240~10000
Settlement pipe particle size analysis method(μm) Electric-resistivity grain counter method(μm)
ds0 ds3 ds50 ds94 ds0 ds3 ds50 ds94
#240 127 90 60±4.0 48 127 103 57±3.0 40
#280 112 79 52±3.0 41 112 87 48±3.0 33
#320 98 71 46±2.5 35 98 74 40±2.5 27
#360 86 64 40±2.0 30 86 68 35±2.0 23
#400 75 56 34±2.0 25 75 58 30±2.0 20
#500 65 48 28±2.0 20 63 50 25±2 16
#600 57 43 24.0±1.5 17 52 41 20±1.5 13
#700 50 39 21.0±1.3 14 45 37 17±1.3 11
#800 46 35 18.0±1.0 12 38 31 14±1.0 9
#1000 42 32 15.5±1.0 9.5 32 27 11.5±1.0 7
#1200 39 28 13.0±1.0 7.8 27 23 9.5±0.8 5.5
#1500 36 24 10.5±1.0 6.0 23 20 8.0±0.6 4.5
#2000 33 21 8.5±0.7 4.7 19 17 6.7±0.6 4
#2500 30 18 7.0±0.7 3.6 16 14 5.5±0.5 3
#3000 28 16 5.7±0.5 2.8 13 11 4.0±0.5 2
#4000 4.7±0.4 11 8 3.0±0.4 1.3
#6000 8 5 2.0±0.4 0.8
#8000 6 3.5 1.2±0.3 0.6(ds75
#10000 0.8±0.2

White Fused Alumina(FAQ)

How is silicon carbide obtained?

Silicon carbide (SiC) is produced from coke and quartz sand applying the Acheson process in an electric resistance furnace. When petrol coke and quartz sand are grouped around a graphite electrode and heated to a temperature of 2,000°C, black and slightly higher-quality green SiC are obtained. Green SiC has a

What is melting vs. Sintering?

When processing minerals in a furnace, materials can either be melted or sintered.  When materials are melted during the production process the minerals go from a solid state, to a liquid state, then is re-solidified during the cooling process creating uniformity in the chemistry throughout the entire batch. The sinerting process

Form and shape of the abrasive:

This decision is made by determining how the abrasive will be used by the individual. Abrasives are sold in forms such as sheets, large/small discs, belts, and large/small rolls. Selecting the right form is determined by whether the abrasive will be used for hand. sanding, applied to a large disc

How do i prevent moisture contamination in the abrasive?

Moisture contamination is the number one reason customers call Technical Support. Fortunately, it is usually preventable. There are 4 key ways to keep your abrasive free of moisture:1.Store abrasive properly and always make sure bottles are tightly closed when not in use.2.Keep abrasive in a cool dry location with minimum

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