Steel producers merged with other companies, split into other companies or no longer operational
•
AK Steel (bought by
Cleveland-Cliffs) •
Algoma Steel (assets bought by
Essar Steel in April 2007) •
Altos Hornos de México, (defunct in 2024) •
Arbed (merged in 2002 forming Arcelor) •
Arcelor (merged with Mittal forming ArcelorMittal) •
Baosteel Group (merged with Wuhan Group forming China Baowu Steel Group) •
Benxi Steel Group (merged with Ansteel Group) •
Bethlehem Steel (assets bought by ISG in 2003. ISG merged with Mittal, now ArcelorMittal) • (bankrupted in 2016) •
British Steel Corporation formed in 1967 when steel was nationalised in the UK. Privatised again in 1988. •
British Steel plc (merged with Koninklijke Hoogovens (NL) in 1999 to form Corus, now Tata Steel) •
Carnegie Steel Company (sold to U.S. Steel in 1901) •
Cockerill-Sambre (acquired by
Usinor in 1998, which became part of Arcelor in 2002, now ArcelorMittal) •
Corus Group (acquired by Tata Steel in 2007) •
Dofasco in
Hamilton, Ontario, Canada (acquired by Arcelor, now ArcelorMittal) •
Falck Group (turned the production to
renewable energy with
Falck Renewables) •
Gruppo Riva (split into ILVA and Riva Forni Electtrici in 2013) •
Hoesch Stahl AG (acquired by
ThyssenKrupp) •
Inland Steel Company (acquired by Ispat International became Mittal, now ArcelorMittal) •
International Steel Group (merged with Mittal, now ArcelorMittal) •
Jones and Laughlin Steel Company (acquired by
Ling-Temco-Vought, renamed LTV Steel, acquired by ISG) •
Koninklijke Hoogovens (merged with British Steel (UK) in 1999 to form Corus, now Tata Steel) •
Krupp (merged with
Thyssen to form ThyssenKrupp in 1999) •
Kunming Steel, China (merged into
China Baowu Steel Group) •
Lackawanna Steel Company (acquired by
Bethlehem Steel in 1922, plants closed in 1982) •
Laiwu Steel (merged into
Shandong Iron and Steel Group) •
Lone Star Steel Company (acquired by U.S. Steel in 2007) •
Maanshan Iron & Steel (acquired by China Baowu in 2019) •
Mittal Steel Company (merged with Arcelor forming ArcelorMittal) •
National Steel Corporation (acquired by U.S. Steel in 2003) •
Northwestern Steel and Wire (reorganized and operating as Sterling Steel Company) •
Pingxiang Iron and Steel (merged with Jiujiang Steel forming Fangda Steel) •
Republic Steel (merged into LTV Steel, acquired by ISG, merged with Mittal, now ArcelorMittal) •
Rouge Steel (formerly owned by
Ford Motor Corporation; acquired by
Severstal in 2004) •
Steel Company of Wales (absorbed into
British Steel Corporation in 1967) •
Taiyuan Iron and Steel Group (merged into
China Baowu Steel Group) •
Timken (split to form
TimkenSteel Corporation in 2014) •
Thyssen (merged with
Krupp to form ThyssenKrupp in 1999) •
Weirton Steel (acquired by ISG, which merged with Mittal, now ArcelorMittal) •
Wuhan Iron and Steel Corporation (merged with Baosteel forming China Baowu Steel Group) •
Youngstown Sheet and Tube (acquired by Jones and Laughlin Steel Company ca. 1977) ==Notes==