Al₂O₃（%）-SiC-C Iron runner
| Class performance | T-1 | T-2 | |
|---|---|---|---|
| Al2O3(%) | 65-70 | 40-60 | |
| SiC(%) | 10-20 | 10-20 | |
| SiO2(%) | 2-5 | 10-25 | |
| F.C(%) | 3-8 | 5-12 | |
| Bulk density(g/cm³) | 110℃x24h | 2.95-3.1 | 2.85-2.95 |
| 1450℃x3h | 2.85-2.9 | 2.7-2.8 | |
| Compressive strength(Mpa) | 110℃x24h | ≥40 | ≥30 |
| 1450℃x3h | ≥55 | ≥45 | |
| Flexural strength(Mpa) | 110℃x24h | ≥5 | ≥4 |
| 1450℃x3h | ≥8 | ≥6 | |
| Linear change rate(%) | 1500℃x3h | ±0.5 | ±1.0 |
| Use parts and construction methods | For large blast furnace main ditch, slag ditch and other on-site ramming or pouring | For small and medium blast furnace main ditch, slag ditch and other on-site ramming or pouring | |
