| Net sales | 17,649.06a | 17,610.09a | 16,414.47a |
| Cost of sales | -14,760.22a | -14,050.74a | -12,487.28a |
| Gross profit | 2,888.84a | 3,559.36a | 3,927.18a |
| Selling, general and administrative expenses | -1,650.76a | -1,471.68a | -1,143.65a |
| Other operating (expense) income, net | 25.23a | 110.34a | -84.02a |
| Operating income | 1,263.31a | 2,198.01a | 2,699.52a |
| Finance expense | -196.18a | -125.38a | -46.74a |
| Finance income | 297.82a | 255.01a | 75.15a |
| Other financial (expenses) income, net | -295.86a | -6.18a | -98.54a |
| Equity in earnings of non-consolidated companies | 69.11a | 105.31a | 37.11a |
| Provision for ongoing litigation related to the acquisition of a participation in Usiminas | -410.2a | 0a | 0a |
| Effect related to the increase of the participation in Usiminas | 0a | -171.05a | 0a |
| Recycling of other comprehensive income related to Usiminas | 0a | -934.95a | 0a |
| Profit before income tax expense | 728.01a | 1,320.78a | 2,666.5a |
| Income tax expense | -554.22a | -334.41a | -573.73a |
| Profit for the year | 173.78a | 986.37a | 2,092.77a |
| Attributable to | — | — | — |
| Owners of the parent | -53.67a | 676.04a | 1,767.52a |
| Non-controlling interest | 227.45a | 310.33a | 325.26a |