Since its inception, ArcelorMittal has rapidly grown through a successful consolidation strategy with a number of significant acquisitions. The world's largest steelmaker was created through the merger of Arcelor and Mittal Steel in 2006. ArcelorMittal in Luxembourg is the successor of Arbed.
1911:
Creation of Arbed

Six blast furnaces were ignited to start the production.
Check out the movie on the 100 years of steel industry in Luxembourg - from Arbed (Aciéries Réunies de Burbach, Eich et Dudelange) to ArcelorMittal
1976:
Creation of Mittal Steel

Mittal Steel’s rapid growth since 1989 has been the result of combining a successful consolidation strategy with a number of significant acquisitions.
Since setting up operations in Trinidad and Tobago in 1989, some of its major acquisitions are Siderurgica del Balsas (Mexico) in 1992, Sidbec (Canada) in 1994, Karmet (Kazakhstan) and Hamburger Stahlwerke (Germany) in 1995, Thyssen Duisburg (Germany) in 1997, Inland Steel (US) in 1998, Unimetal (France) in 1999, Sidex (Romania) and Annaba (Algeria) in 2001, Nova Hut (Czech Republic) in 2003, BH Steel (Bosnia), Balkan Steel (Macedonia), PHS (Poland) and Iscor (South Africa) in 2004, ISG (US), Kryvorizhstal (Ukraine), as well as a significant interest in Hunan Valin Steel (China) in 2005, and three Stelco Inc. subsidiaries (Canada) in 2006.
2002:
Creation of Arcelor

Arcelor was created in February 2002 through the merger of Arbed (Luxembourg), Aceralia (Spain) and Usinor (France).
Arcelor also had major steel production facilities in Belgium, Germany, Italy, Brazil and Argentina. Arcelor acquired a controlling interest in Companhia Siderurgica Tubarao (now a part of ArcelorMittal Brasil) in 2004, Huta Warszawa (Poland) in 2005, a controlling interest in Sonasid (Morocco), as well as Dofasco (Canada) in 2006. At the time of the merger with Mittal Steel, Arcelor was the second largest steel producer in the world.
2006:
Creation of ArcelorMittal

In 2007 the newly merged ArcelorMittal continued to pursue an expansive growth strategy, with 35 transactions announced worldwide.
At the beginning of 2008 ArcelorMittal continued to make investments, with significant transactions announced in Australia, Brazil, Canada, Costa Rica, France, Russia, South Africa, Sweden, Turkey, United Arab Emirates, the US and Venezuela, the majority of which were completed. But in light of the deteriorating economic situation during 2008, ArcelorMittal suspended most investment activity by the end of the year.
Post-crisis, ArcelorMittal has cautiously restarted certain projects to capture growth in key emerging markets and mining.
2016:
Action 2020, a five-year strategic plan

In 2016, the company announced Action 2020, a five-year strategic plan targeting US$3bn of structural Ebitda improvement, and annualised free cash flow in excess of US$2bn, by 2020. August 2016 marked the ten-year anniversary of the official merger between Arcelor and Mittal Steel, which paved the way for ArcelorMittal’s ten years of industry leadership. Check out the movie!