Emery (Corundum)
Informação de produto geral
Emery sand namely aluminum oxide is an extremely sharp, long lasting, blasting abrasive that can be recycled many times. It is the most widely used abrasive in blast finishing and surface preparation because of its cost, longevity and hardness. Harder than other commonly used blasting materials, aluminum oxide grains penetrate and cut even the hardest metals and sintered carbide.Chemical Compositions
Item Name
Conc(%)
Na2O
0.07802
MgO
1.181
Al2O3
40.46
SiO2
26.87
P2O5
0.2499
SO3
0.01015
K2O
0.06298
CaO
1.984
Ti2O3
1.606
Cr2O3
0.04053
MnO
0.4694
Fe2O3
26.91
ZnO
0.01335
Y2O3
0.01817
ZrO2
0.04186
Physical Properties
Basic Mineral
a-AL2O3
True Specific Gravity
3.96-4.10g/cm3
crystal system
Six-party body
Color
Dark Brown
Moh's Harness
7.49-8.00
Melting Point
1180-1280?
Grain Size
Mesh 8-240
Comparison Chart for Grit Sizes Between China & Other Countries
Grit
China&Europe
Japan
America
F4
5600-4750
5600-4750
F5
4750-4000
4750-4000
F6
4000-3350
4000-3350
F7
3350-2800
3350-2800
F8
2800-2360
2800-2360
2800-2360
F10
2360-2000
2360-2000
2360-2000
F12
2000-1700
2000-1700
2000-1700
F14
1700-1400
1700-1400
1700-1400
F16
1400-1180
1400-1180
1400-1180
F20
1180-1000
1180-1000
1180-1000
F22
1000-850
1000-850
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F24
850-710
850-710
850-710
F30
710-600
710-600
710-600
F36
600-500
600-500
600-500
F40
500-425
500-425
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F46
425-355
425-355
425-355
F54
355-300
355-300
355-300
F60
300-250
300-250
300-250
F70
250-212
250-212
250-212
F80
212-180
212-180
212-180
F90
180-150
180-150
180-150
F100
150-125
150-125
150-125
F120
125-106
125-106
125-106
F150
106-75
106-75
106-75
F180
90-63
90-63
90-63
F220
75-53
75-53
75-53
F240