It has property of excellent resistant-corrosion, high mechanical strength, and high thermal conductivity, good self-lubrication, used as seal faces, bearings and tubes in Food Industry, aviation, aircraft, machinery,metallurgy, printing and dyeing, pharmaceutical, auto industry and so on. When the sic faces are combined with graphite faces the friction is the smallest and they can be made into mechanical seals which are able to work in highest working requirements.
| Silicon Carbide Physical Property | ||||||
|---|---|---|---|---|---|---|
| Technical Parameter | Unit | SiC | SSiC | SiC+C | SiSiC | QssiC |
| Hardness | HS | 110 | 115 | 105 | 110 | 100 |
| Porosity Rate | % | <0.3 | <0.2 | <0.5 | <0.5 | <5 |
| Density | G/cm | 3.00-3.05 | >3.10 | 2.69-2.90 | 2.70-3.0 | 2.65 |
| Compressive Strength | Mpa | >2200 | >2500 | >1400 | >1600 | >800 |
| Fractural Strength | Mpa | >350 | >380 | >150 | >160 | >100 |
| Coefficient of heat expansion | 10 / C | 4 | 4.2 | 3.50 | 3.00 | 2.50 |
| Content of si | % | 90 | 98 | 85 | 92 | 90 |
| Free si | % | 10 | 1 | 12 | / | / |
| Elastic modulus | Gpa | 400 | 410 | 350 | 360 | 180 |
| temperature | C | 1300 | 1400 | 1300 | 1400 | 1400 |
