| Steel slag concentration (%) | Ca (mg/kg) | Mg (mg/kg) | Fe (mg/kg) | Mn (mg/kg) |
| 0 | 10,780 | 2580 | 1040 | 380 |
| 0.2 | 13,500 | 2880 | 1040 | 430 |
| 0.4 | 16,740 | 2860 | 2020 | 440 |
| 0.6 | 15,000 | 2860 | 2300 | 480 |
| 0.8 | 20,260 | 3040 | 2500 | 480 |
| 1.0 | 24,980 | 3140 | 2800 | 460 |
| 1.2 | 22,800 | 2900 | 2700 | 480 |
| 1.4 | 22,820 | 2880 | 2420 | 540 |