Silicon Carbide
Silicon Carbide is a man made mineral product of extreme hardness and sharpness.
It is the ideal abrasive for grinding materials of low tensile strength such as
Cast iron, Brass, Aluminium, Bronze, and Cemented Carbide etc.
Its thermal properties make it an excellent medium for use in the manufacture of refractory products including crucibles.
Silicon Carbide is supplied in grain and powder form in a number of different “qualities” each of which has its own particular uses.
Loose Abrasive Grain
In the manufacture of spectacle and telescope lenses; setting up fabric buffing mops for metal polishing; polishing compounds and grease cakes; polishing and cutting gemstones; Glass and metal lapping; for working and polishing granite and stone; and preparing non-slip surfaces by adding to granolithic flooring; stair treads, thresholds etc.
Bonded Abrasives
In grinding wheels for use on materials of low tensile strength, such as cast and chilled iron, non-ferrous alloys, marble and stone, ceramic materials, aluminium, brass and copper, and on materials requiring sharp cutting edges for example rubber, leather and glass; in stones for sharpening hand tools; and in rubbing in bricks for foundry and stone trade uses.
Hardness
The following values show the relative hardness of silicon carbide
 Diamond Moh 10 Silicon Carbide Moh 9-10
Aluminium Oxide Moh 9
Garnet Moh 8
Note: Please refer to material safety data sheet when mixing with other products and for general safety handling.
Available Size Grades
1. Standard grits graded in accordance with the FEPA Standards
1.1 FEPA grits for bonded abrasives and other applications
1.2 FEPA grits, P series, for coated abrasives only
1.3 Nominal grit size in microns
1.4 FEPA microgrits, F series, for bonded abrasives and other applications
1.5 Average particle size of FEPA grits, F series, in microns (determined by
photosedimentation*)
1.6 FEPA microgrits, P series, for coated abrasives only
1.7 Average particle size of FEPA microgrits, P series, in microns (determined by U.S.
Sedimentation Tube*)
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Macrogrits:
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Microgrits:
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1.1
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1.2
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1.3
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1.4
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1.5
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FEPA F Series Grit No.
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FEPA**) P Series Grit No.
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Nominal Grit Size in microns
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FEPA F Series Grit No.
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Average Particle Size (50% point) in microns with in the range
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F4
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-
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5600-4000
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F 230/53
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56-50
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F5
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-
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4750-3350
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F 240/45
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46.5-42.5
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F6
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-
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4000-2800
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F 280/37
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38-35
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F7
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-
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3350-2360
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F 320/29
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30.7-27.7
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F8
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-
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2830-2000
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F 360/23
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24.3-21.3
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F10
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-
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2380-1680
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F 400/17
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18.3-16.3
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F12
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P 12
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2000-1410
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F 500/13
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13.8-11.8
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F14
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-
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1680-1190
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F 600/9
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10.3-8.3
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F16
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P 16
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1410-1000
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F 800/7
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7.5-5.5
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F20
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P 20
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1190-841
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F1000/5
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5.3-3.7
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F22
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-
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1000-707
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F1200/3
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3.5 2.5
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F24
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P 24
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841-595
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F 30
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P 30
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707-500
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1.6
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1.7
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F36
F40
F46
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P 36
P 40
-
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595-420
500-354
420-297
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FEPA
P Series Grit No.
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Average Particle Size (50% point) in microns with in the range
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F54
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P 50
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354-250
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P 240
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60.5-56.5
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F60
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P 60
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297-210
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P 280
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54.20-50.2
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F70
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-
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250-177
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P 320
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47.7-44.7
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F80
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P 80
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210-149
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P 360
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42.0-39.0
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F90
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P 100
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177-125
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P 400
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36.5-33.5
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F100
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P 120
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149-105
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P 500
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31.7-28.7
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F120
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P 150
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125-88
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P 600
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25.75-24.75
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F150
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-
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105-63
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P 800
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22.8-20.8
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F180
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P 180
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88-53
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P 1000
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19.3-17.3
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F220
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P220
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74-44
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P 1200
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16.2-14.2
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*) The measured values of the two methods cannot be compared directly
**) The FEPA P grits correspond only approximately to the nominal grit sizes
2. Special Grades
Grits and group grades for special purposes can be made available on request.
3. Bubble Alumina Group Grades
Special Type Standard Type
(Shells removed) (Shells not removed)
1-2mm 2-5mm 0-0.5mm 0-2mm
2-3mm 3-5mm 1-1.0mm 0-3mm
0.5-1.0mm 0-5mm
For a free Quotation, or for further information please don't hesitate to contact us
© Copyright Syntech Distributors Ltd, February 2006
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