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High Purity WA Micro Grits (Low Sodium)

With strong chemical stability and high insulativity, it is applied to consolidation and coated abrasives, wet or dry blasting sand, precision grinding for industry of crystal or electronics, and making high level refractory materials.

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Product Details

With strong chemical stability and high insulativity, it is applied to consolidation and coated abrasives, wet or dry blasting sand, precision grinding for industry of crystal or electronics, and making high level refractory materials. And it is also suitable for producing the higher hardness and tensile strength material, such as alloy steel, high speed steel and high carbon steel, ect. It also can be used to make contacting media material, insulator and precise casting sand. According to the purity,we can supply both Na2O 0.3% and Low soda Na2O 0.05% products.

Applications

a.) WFA Grinding wheel, cutting wheel, abrasive disc,

b.) Fine sandblasting(such as mobile phone cover,etc), polishing

c.) Abrasive paper, abrasive belt

Item Al2O3 % Fe2O3 % max SiO2 % max Na2O % max
TW-Ⅰ 99.5 0.05 0.10 0.35
TW-Ⅱ 99.7 0.05 0.10 0.06

Fused Alumina Abrasives Micro Grits Size

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
FEPA abrasives micro size distribution
Settlement pipe particle size analysis
ds3 ds50 ds94
F230 77 55.7±3.0 38
F240 68 47.5±2.0 32
F280 60 39.9±1.5 25
F320 52 32.8±1.5 19
F360 46 26.7±1.5 14
F400 39 21.4±1.0 10
F500 34 17.1±1.0 7
F600 30 13.7±1.0 4.6
F800 26 11.0±1.0 3.5
F1000 23 9.1±0.8 2.4
F1200 20 7.6±0.5 2.4
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

Packing

1000kg or 1250kg bulk bags

Bulk bag on pallets

25kg woven bag in bulk bags

25kg paper bag on pallets

Inquiry

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