Key ratios
| Financial ratios | 2012* | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 |
| EBITDA margin (%) | 16% | 14% | 23% | 24% | 25% | 26% | 30% |
| Operating profit margin (%)** | 9% | 6% | 15% | 17% | 19% | 20% | 25% |
| Net margin (%) | 5% | 1% | 7% | 12% | 12% | 14% | 19% |
| Slab cash cost ($/t) | 388 | 348 | 283 | 206 | 194 | 260 | 266 |
| EBITDA per tonne of steel produced (USD/t) | 127 | 96 | 150 | 123 | 116 | 158 | 208 |
| Net Debt / EBITDA (x) | n/a | 1.92 | 0.70 | 0.60 | 0.39 | 0.35 | 0.25 |
*2012 results are presented in accordance with US GAAP; 2013-2017 results are presented in accordance with IFRS
** Operating profit before share of results of joint ventures, impairment of non-current assets and loss on disposals of property, plant and equipment