Brown fused aluminum oxide 80grits

Brown fused aluminum oxide 80grits

/MT

Brown fused aluminum oxide 80grits

Brown Aluminum Oxide (ALOX) is suitable for wet or dry surface preparation, cleaning, deburring, and many other applications.

Fused aluminum oxides show a value of 9 on the Mohs scale of hardness close to diamond (Mohs 10), the hardest known substance. Besides their superior hardness, the characteristics of fused aluminum oxides include sharp-edged grains, great load bearing capacity, a high degree of shock resistance and thermal and chemical stability.

Chemical & Physical Properties
Crystal FormAlpha alumina trigonal system
Chemical natureAmphoteric
Reaction with acidsSubject to mild attack by aqua and hydrofluoric acid
Reaction with AlkaliesVery slight with strong hot solution only
Oxidation-reduction effectsNone
True Density(g/cm3)3.97
HardnessKnoop(kg/cm2)2000-2200
Moh’s9
ColourDark Brown
Colour after firingLight blue
Melting point2000°C
Max Usable temperature1900°C
Specific heat (cal/g.°C)0.26(20-29°C)
Coefficient of thermal conductivityRoom temperature900°C
(cal/cm2.sec.°C)0.0470.013
Electrical resistivity (Wcm)30°C300°C900°C1600°C
10161013105104
Coefficient of linear expansion     (x10-6)7-9(0-1600°C)

Grit No.MicronGrit No.MicronGrit No.Micron
102360 ~ 200030710 ~ 60080212 ~ 180
122000 ~ 170036600 ~ 50090180 ~ 150
141700 ~ 140040500 ~ 425100150 ~ 125
161400 ~ 118046425 ~ 355120125 ~ 106
201180 ~ 100054355 ~ 300150106 ~ 75
221000 ~ 85060300 ~ 25018090 ~ 63
24850 ~ 71070250 ~ 21222075 ~ 53
Available micron powder sizes
China GB 2477-83JISFEPA(84) / DIN(70)ISO(77)
Grit No.Standard size range(µm)Grit No.ds50 value (µm)Grit No.ds50 value (µm)Grit No.ds50 value (µm)
Standard werte der Mikro-F-ReiheSerigraph 5000D
24060.0±4.0P24058.5±2.0
28052.0±3.0P28052.2±2.0
W6363 – 5032046.0±2.5F230/5353±3.050.0±3.0P32046.2±1.5
W5050 – 4036040.0±2.0F240/4544.5±2.042.0±2.0P36040.5±1.5
40034.0±2.0P40035.0±1.5
W4040 – 2850028.0±2.0F280/3736.5±1.534.5±1.5P50030.2±1.5
60024.0±1.5F320/2929.2±1.527.7±1.5P60025.8±1.0
W2838 – 2070021.0±1.3F360/2322.8±1.521.6±1.5P80021.8±1.0
80018.0±1.0F400/1717.3±1.016.5±1.0P100018.3±1.0
W2020 – 14100015.5±1.0F500/1312.8±1.012.3±1.0P120015.3±1.0
W1414-10120013.0±1.0
150010.5±1.0F600/99.3±1.09.0±1.0
W1010-720008.5±0.7
W77-525007.0±0.7F800/76.5±1.06.3±1.0
W55 – 3.530005.7±0.5F1000/54.5±0.84.5±0.8
F1200/33.1±0.53.1±0.5
for general purposesfor general purposesfor bonded abrasivesfor coated abrasives

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