| Sponge Iron Type | Total Iron % (Minimum) | Metallic Iron % (Minimum) | Degree of Depletion % (Minimum) | Average Carbon Percentage % | Phosphorus % (Maximum) | Sulfur % (Maximum) | Impurity Percentage (SiO₂ + Al₂O₃ + CaO) (Maximum) | Size (mm) | Specific Density (tons/m³) | Bulk Density (tons/m) |
|---|---|---|---|---|---|---|---|---|---|---|
| Hot Briquetted Iron (HBI) | 91 | 84 | 92 | 0.85 | 0.045 | 0.03 | 5 | 106×48×32 | 4.9-5.3 | 2.6-2.8 |