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WINOA IKK White Fused ALUMINA

Made in: Japan
Manufacturer: WINOA IKK JAPAN CO., LTD
Model: White Fused ALUMINA

Features

(1) Obtained by pulverizing alumina refined by the Bayer method.

(2) Compared to brown fused alumina, it has slightly higher hardness and slightly lower toughness.

■ White Alumina (WA), with special adhesion and coating, is used to make abrasives for polishing very hard steels such as high carbon steels, alloy steels and high speed steels.

■ Applications other than abrasives include precision casting sand, spray coating materials, catalyst materials, high-temperature ceramics, and super refractories.

Specifications

Chemical composition
(% by weight)
Grit no. Al2O3 _ _ _ Na2O _ _
#4 – #90 ≧98.5 ≤0.5
#100 – #240 ≧98.5 ≤0.7
basic minerals α – Al2O3 _
crystal diameter 600-1400 microns
true specific gravity >3.95
The bulk density 1.75-1.85 g/cm³
Knoop hardness 200-2300kg/mm²
New Mohs hardness 12 (Old Morse, 9)
Toughness (single grain crushing strength) 0.72kg
Basic granularity
Grit no. micron Grit no. micron
8 2800-2360 150 106-75
Ten 2360-2000 180 90-63
12 2000-1700 220 75-53
14 1700-1400 240 75-53
16 1400-1180 Fine particle size below
20 1180-1000 240 87.5-73.5
22 1000-850 280 73.5-62
24 850-710 320 62-52.5
30 710-600 360 52.5-44
36 600-500 400 44-37
40 500-425 500 37-31
46 425-355 600 31-26
54 355-300 700 26-22
60 300-250 800 22-18
70 250-212 1000 18-14,5
80 212-180 1200 14.5-11.5
90 180-150 1500 11.5-8.9
100 150-125 2000 8.9-7.1
120 125-106 2500 7.1-5.9
Packing 25kg PP bag (paper bag, flexible container bag)
place of origin China

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