Black Silicon Carbide is produced at high temperature in an electric resistance type furnace with quarts sand and petroleum coke as its main raw materials. Its hardness is between fused alumina and synthetic diamond. Mechanical intensity of it is higher than fused alumina. It is brittle and sharp and has electrical and heat conductivity in some degree. The abrasives made of it are suitable for working on cast iron, non-ferrous metal, rock, leather, rubber, etc. It is also broadly used as refractory material and metallurgical additive.
| SIC≥% | F.C≤% | Fe2O3≤% | ||||
|---|---|---|---|---|---|---|
| Normal | Special | Normal | Special | Normal | Special | |
| F12 – F90 | 98.50 | 99.00 | 0.20 | 0.10 | 0.60 | 0.20 |
| F100 – F150 | 98.00 | 99.00 | 0.30 | 0.15 | 0.80 | 0.25 |
| F180 – F220 | 97.00 | 99.00 | 0.30 | 0.15 | 1.20 | 0.20 |
| Grit | Normal Bulk Density | High Bulk Density | Grit | Normal Bulk Density | High Bulk Density |
|---|---|---|---|---|---|
| F16 – F24 | 1.42 – 1.50 | ≥ 1.50 | F100 | 1.36 – 1.45 | ≥ 1.45 |
| F30–F40 | 1.42–1.50 | ≥1.50 | F120 | 1.34–1.43 | ≥1.43 |
| F46–F54 | 1.43–1.51 | ≥1.51 | F150 | 1.32–1.41 | ≥1.41 |
| F60–F70 | 1.40–1.48 | ≥1.48 | F180 | 1.31–1.40 | ≥1.40 |
| F80 | 1.38–1.46 | ≥1.46 | F220 | 1.31–1.40 | ≥1.40 |
| F90 | 1.38–1.45 | ≥1.45 |
| Grit | Min. % | Max. % | Max.% | Max. % | Max. % | Max. % | LPD |
|---|---|---|---|---|---|---|---|
| No. | SiC | F.C | SiO2 | F.Si | Fe2O3 | MI | G/cm³ |
| P12 | 98 | 0.3 | 0.5 | 0.7 | 0.3 | 0.03 | Record |
| P16 | 98 | 0.3 | 0.4 | 0.6 | 0.3 | 0.03 | Record |
| P20 | 98.5 | 0.3 | 0.4 | 0.6 | 0.3 | 0.03 | Record |
| P24 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.03 | 1.45-1.55 |
| P30 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.03 | 1.45-1.55 |
| P36 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.03 | 1.45-1.55 |
| P40 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.03 | 1.45-1.55 |
| P50 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.03 | 1.45-1.55 |
| P60 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.03 | 1.44-1.54 |
| P80 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.02 | 1.44-1.54 |
| P100 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.02 | 1.43-1.53 |
| P120 | 98.5 | 0.3 | 0.3 | 0.5 | 0.3 | 0.02 | 1.40-1.50 |
| P150 | 98.5 | 0.3 | 0.4 | 0.6 | 0.3 | 0.02 | 1.37-1.47 |
| P180 | 98 | 0.3 | 0.4 | 0.6 | 0.5 | 0.02 | 1.32-1.42 |
| P220 | 98 | 0.3 | 0.5 | 0.8 | 0.5 | 0.02 | 1.28-1.38 |
| P240 | 98 |
Sizes: 0-1mm, 1-3mm, 3-5mm,5-8mm, 0-50mm, -200mesh, -325mesh
Black Silicon Carbide is suitable for make grinding wheels, cutting
wheels, mounted wheels, oil stone, abrasive media, and also suitable for
surface grinding, lapping or polishing.
The abrasive products made of it are suitable for working on Cast Iron,
Non-ferrous Metal, Rock, Leather, Rubber, Wood, Ceramic, etc.
Black Silicon Carbide is also broadly used as high-grade refractory
material and metallurgical additive.
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