Silicon carbide (SiC), also known as carborundum, is a hard chemical compound containing silicon and carbon. They are widely used for abrasives, refractory, metallurgy, and SiC wafer, etc. Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests.
Standard
| Grade | Chemical Compositions(%) |
| SiC | FC | Fe2O3 | Moisture |
| Min | Max |
| SiC90 | 90.0 | 3.0 | 1.2 | 0.5 |
| SiC88 | 88.0 | 4.0 | 1.5 |
| SiC85 | 85.0 | 4.5 | 1.8 |
| SiC80 | 80.0 | 5.0 | 3.0 |
| SiC70 | 70.0 | 8.0 | 4.0 |
Size: 0-1mm; 0-3mm; 0-10mm; 1-10mm; etc
Packing: in 25kg bag or in 1mt big bag. etc
The specs size and packing can according to customer's requirement.
TYPICAL CHEMICAL ANALYSIS
| Purpose | Specification | Chemical Composition(%) | Magnetic material content(%)max |
| Abrasives grade | SICmin | F.Cmax | Fe2O3max |
| grain | 12-80 | 98 | 0.20 | 0.6 | 0.0023 |
| 90-150 | 97 | 0.30 | 0.8 | 0.0021 |
| 180-220 | 97 | 0.30 | 1.2 | 0.0018 |
| micropowder | 240-4000 | 96 | 0.35 | 1.35 | - |
| Refractory grade | Group Size | 0-1mm1-3mm3-5mm5-8mm | 97 | 0.35 | 1.35 | - |
| Fine Powder | -180mesh-200mesh-240mesh-320mesh | 97 | 0.35 | 1.35 | - |
| color | Black |
| Hardness(mohs) | 9.15 |
| Melting point(ºC) | 2250 |
| Maximum service temperature(ºC) | 1900 |
| Ture density(g/cm3) | 3.9 |
PHYSICAL PROPERTIE
| Color | Black |
| Shape | Angular |
| Crystal Form | Alpha silicon carbide in hexagonal system |
| Specific Gravity | 3.92 |
| Hardness | 2750 kg/mm, 9.2 Mohs scale |
| Magnetic Material | 0.0065% |
BULK DENSITY
| Grit(F) | g/cm3 | Grit(F) | g/cm3 | Grit(F) | g/cm3 | Grit(F) | g/cm3 |
| 12 | 1.56 | 30 | 1.54 | 60 | 1.52 | 120 | 1.44 |
| 14 | 1.56 | 36 | 1.54 | 70 | 1.50 | 150 | 1.42 |
| 16 | 1.56 | 40 | 1.54 | 80 | 1.48 | 180 | 1.39 |
| 20 | 1.55 | 46 | 1.54 | 90 | 1.47 | 220 | 1.38 |
| 24 | 1.55 | 50 | 1.54 | 100 | 1.46 |
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GRAIN SIZES AVAILABLE (F)
12, 14, 16, 20, 22, 24, 30, 36, 40, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, 220.FEPA STANDARD Grain Size
| Size | D3(um) | D50(um) | D94 ( um) |
| F230 | <82 | 53.0 ±3.0 | >34 |
| F240 | <70 | 44.5 ±2.0 | >28 |
| F280 | <59 | 36.5± 1.5 | >22 |
| F320 | <49 | 29.2 ± 1.5 | >16.5 |
| F360 | <40 | 22.8 ± 1.5 | >12 |
| F400 | <32 | 17.3 ± 1.0 | >8 |
| F500 | <25 | 12.8 ± 1.0 | >5 |
| F600 | < 19 | 9.3 ± 1.0 | >3 |
| F800 | < 14 | 6.5 ± 1.0 | >2 |
| F1000 | < 10 | 4.5 ±0.8 | >1 |
| F1200 | <7 | 3.0 ±0.5 | >1(at 80%) |
| F1500 | <5 | 2.0 ±0.4 | >0.8(at 80%) |
| F2000 | <3.5 | 1.2 ±0.3 | >0.5(at 80%) |