- Business
- ArcelorMittal S.A. (MT.AS) operates as the world's leading steel and mining company, producing a broad portfolio of flat and long steel products, tubular products, and downstream solutions for automotive, construction, energy, packaging, and appliance sectors; core offerings include hot-rolled coils, cold-rolled coils, coated products, tinplate, electrical steels, sections, rails, sheet piles, wire rod, rebar, bars, pipes, tubes, special steel plates, forged blocks, wires, strands, wire ropes, and value-added services such as steel distribution, processing, foundation solutions, solar projects, and Steligence construction systems. Headquartered in Luxembourg City since its formation in 2006 through the merger of Arcelor and Mittal Steel, the company maintains production facilities across Europe, North America, South America, Africa, and Asia, with key operations in flat products from 11 sites in five European countries, long products from 27 sites in ten countries, and mining for iron ore and metallurgical coal. It serves diverse markets including electro-mobility with advanced high-strength and electrical steels, renewable energy, and infrastructure, supported by approximately 125,000 employees focused on sustainable, low-carbon steel innovation. Recent developments include the June 2025 completion of its acquisition of Nippon Steel Corporation's 50% stake in AM/NS India Calvert, achieving full ownership of the U.S. facility with over $2 billion in prior investments for automotive and energy markets; advancement of a $1.2 billion greenfield non-oriented electrical steel (NOES) plant in Calvert, Alabama, with construction starting in late 2025 and production slated for 2027 to reduce import dependency; the October 2025 launch of Helioroof, a low-carbon insulated steel roofing system integrating solar cells under the EU Innovation Fund-supported Helexio Line; a major expansion in Brazil with a new 640,000-tonne continuous annealing and galvanizing line at Vega for high-strength automotive steels; Phase II iron ore concentrator inauguration in Liberia exceeding $1 billion in investment; and the December 2025 divestiture of its Romanian tubular products facility in Iasi to Metinvest under EU approval.