Product introduction of Black carborundum F100 blast medium for granite
Black carborundum F100 blast medium for granite is a medium-blasting abrasive grain. The main chemical is SiC more than 98%. It is a low weight, high thermal resistance, high thermal conductivity, and extremely hard material. Black carborundum blast medium hardness is 2800-3200 HV, harder than corundum and other blast media. It can grind granite, glass, jade, crystal, and hard alloy. The even particle size makes the surface smooth quickly. It is an aggressive blast medium.
Typical physical properties of Black carborundum F100 blast medium for granite
| 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 carborundum F100 blast medium for granite
| SiC | 98.77% |
| Fe2O3 | 0.18% |
| F.C | 0.14% |
| Magnetic content | 0.011% |
Product Feature of Black carborundum F100 blast medium for granite
- 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 carborundum blast medium:
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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