Product introduction of Black silicon carbide (SiC) F40 grit for marble blasting
Black silicon carbide(SiC) F40 grit is made from high-grade petroleum coke and quartz sand at an extremely high temperature above 2300 degrees. After milling, iron removal, and sieving processes, the silicon carbide is perfectly suitable for grinding. Black silicon carbide F40 is an excellent blast media for glass, stone, marble, ceramic tiles, granite, and other hard materials with low dust. During the blasting process, high-quality SiC (purity of more than 98.5%) is tough to avoid dust and fragile. It is an reusable blast media.
Typical physical properties of Black silicon carbide (SiC) F40 grit for marble blasting
| Hardness: | Mohs:9.2 |
| Melting Point: | dissociated at about 2300 °C |
| Maximum service temperature: | 1900℃ |
| Specific Gravity: | 3.2-3.45 g/cm3 |
| Bulk density(LPD): | 1.2-1.6 g/cm3 |
| Color: | Black |
| Particle shape: | Hexagonal |
| Modulus of Elasticity | 58-65×106 psi |
| Coefficient of Thermal Expansion | 3.9-4.5 x10-6/ ℃ |
| Thermal Conductivity | 71-130 W/MK |
Typical chemical composition of Black silicon carbide (SiC) F40 grit for marble blasting
| SiC | 98.77% |
| Fe2O3 | 0.18% |
| F.C | 0.14% |
| Magnetic content | 0.011% |
Product Feature of Black silicon carbide(SiC) Grit
- Good oxidation resistance and chemical stability at high temperatures.
- High hardness with Mohs 9.2-9.3. Even at 2000℃, it still gets high strength.
- Excellent toughness.
- Low thermal conductivity. So it can resistant to thermal shock.
- High purity min SiC content is 98.5%.
- High bulk density.
- Black silicon carbide grit is washed with water before the milling process, so there are few impurities.
Application of Black silicon carbide(SiC) Grit:
Abrasive sandblasting for stone, marble, granite, etc.
Surface cleaning of semiconductor aluminum alloy, etc.
Sandblasting and grinding of ceramic products and electronic ceramics.
Polishing ceramic electronic component.
Gem polishing, gem perforation.
Blasting and grinding of glass artwork, etc.
Other available Grit Sizes:
| Macro Grit Size | Average particle size（mm） | Basic particle size（mm） |
| 8# | 2.460 | 2.000-2.360 |
| 10# | 2.085 | 1.700-2.000 |
| 12# | 1.765 | 1.400-1.700 |
| 14# | 1.470 | 1.180-1.400 |
| 16# | 1.230 | 1.100-1.180 |
| 20# | 1.040 | 0.850-1.000 |
| 22# | 0.885 | 0.710-0.850 |
| 24# | 0.745 | 0.600-0.710 |
| 30# | 0.625 | 0.500-0.600 |
| 36# | 0.525 | 0.425-0.500 |
| 40# | 0.438 | 0.355-0.425 |
| 46# | 0.370 | 0.300-0.355 |
| 54# | 0.310 | 0.250-0.300 |
| 60# | 0.260 | 0.212-0.250 |
| 70# | 0.218 | 0.180-0.212 |
| 80# | 0.185 | 0.150-0.180 |
| 90# | 0.154 | 0.125-0.150 |
| 100# | 0.129 | 0.106-0.125 |
| 120# | 0.109 | 0.090-0.106 |
| 150# | 0.082 | 0.063-0.075 |
| 180# | 0.069 | 0.053-0.075 |
| 220# | 0.058 | 0.045-0.063 |
| Grit designation | Mean grain size ds50-value in μm |
| F 230 | 53.0 ± 3 |
| F 240 | 44.5 ± 2 |
| F 280 | 36.5 ± 1.5 |
| F 320 | 29.2 ± 1.5 |
| F 360 | 22.8 ± 1.5 |
| F 400 | 17.3 ± 1 |
| F 500 | 12.8 ± 1 |
| F 600 | 9.3 ± 1 |
| F 800 | 6.5 ± 1 |
| F 1000 | 4.5 ± 0.8 |
| F 1200 | 3.0 ± 0.5 |
| F 1500 | 2.0 ± 0.4 |
| F 2000 | 1.2 ± 0.3 |
| F 3000 | 0.8±0.2 |
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