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Help Center88% Purity Refractory Black Silicon Carbide/SIC 0-10mm
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88% Purity Refractory Black Silicon Carbide/SIC Manufacturer Black Silicon Carbide is produced in an electric resistance furnace from quartz sand and petroleum
coke or anthracite at high temperature.
The hardness and sharp particle of this material make it suitable for manufacturing of grinding
wheels, coated products, wire saws, superior refractory materials and deoxide as well as
for lapping, polishing and blasting.
Chemical & Physical Properties
Crystal Form |
Alpha SiC hexagonal system |
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Chemical nature |
Slight acid |
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Reaction with acids |
Very slight surface action with hydrofluoric acid |
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Reaction with Alkalis |
Attacked at high temperature by alkalis and iron oxide |
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Oxidation-reduction effects |
Starts to oxide slowly at 800oC. No reduction |
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True Density (g/cm3) |
3.20 |
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Hardness |
Knoop(kg/cm2) |
2200-2500 |
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Moh's |
9.5 |
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Color |
Black |
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Color after firing |
Black |
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Decomposition point |
2200oC |
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Max Usable temperature |
1540oC in air |
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Specific heat (cal/g.oC) |
0oC |
500oC |
1000oC |
||
0.14 |
0.28 |
0.13 |
|||
|
Coefficient of thermal conductivity (cal/cm2.sec.oC) |
600oC |
800oC |
1000oC |
||
0.080 |
0.061 |
0.0510 |
|||
Electrical resistivity ( Wcm) |
25oC |
100oC |
400oC |
800oC |
1400oC |
50 |
46.4 |
26.6 |
7.8 |
0.65 |
|
Coefficient of liner expansion (x10-6) |
25oC-500oC |
25oC-1000oC |
25oC-1500oC |
25oC-2000oC |
25oC-2500oC |
4.63 |
5.12 |
5.48 |
5.77 |
5.94 |
|
Chemical Composition (% by weight)
Grit sizes |
SiC |
F.C |
Fe2O3 |
-100# |
88 min |
0.35 max |
0.60 max |
12# - 90# |
98.5 min |
0.20 max |
0.60 max |
100# - 180# |
98.0 min |
0.30 max |
0.80 max |
220# - 240# |
97.0 min |
0.30 max |
1.20 max |
Available sizes: can be produced by customer’s requirements.
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