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ArcelorMittal Acquires Nippon Steel’s Interest in AM/NS Calvert
06/18/2025 - ArcelorMittal announced today that it has acquired Nippon Steel Corp.’s 50% equity stake in AM/NS Calvert, true to the equity purchase agreement the companies made last year subject to Nippon Steel completing its acquisition of United States Steel Corporation.
The company said the facility has been renamed ArcerlorMittal Calvert. Assets of the facility include a hot strip mill designed to roll advanced high-strength steels, line pipe and stainless products; a continuous pickling line and coupled pickle line tandem cold mill; and coating and continuous annealing lines for the production of galvanized, galvanneal, aluminized and cold-rolled steels. It has an estimated annual capacity of about 5.3 million metric tons.
“We have invested considerably and transformed the facility into a highly strategic steelmaking asset, capable of producing the highest quality, low-carbon-emissions steels, and with considerable further opportunity to grow,” said Aditya Mittal, chief executive officer of ArcelorMittal.
Since ArcelorMittal and Nippon Steel acquired the facility from thyssenkrupp in 2014, more than US$2 billion in CAPEX investments have been made to improve operational efficiency and enhance product offerings to the U.S. automotive and energy markets.
Investments include additional slab bays and cranes, a logistics center for high-volume pipe production and increased coil size, enhancements to the capabilities of the three coating lines and continuous annealing line, and the new steelmaking facility that can produce an estimated 1.5 million metric tons of green steel annually, the company said.
“We have already started the expansion of Calvert’s world-class assets with our new [electric arc furnace] EAF which is supported by a resilient and sustainable domestic supply chain, including [hot briquetted iron] HBI from our plant in Texas,” said John Brett, chief executive officer of ArcelorMittal North America.
The new steelmaking facility, capable of supplying exposed automotive grades, completed commissioning and first heat this month. ArcelorMittal said it is integrated with its HBI facility in Texas and will enable Calvert to supply automotive customers with lower CO2 embodied steel, melted and poured in the U.S.
“Additionally, our planned [non-grain-oriented electrical steel] NOES facility will broaden our product portfolio, supplying the growing automotive mobility demands,” Brett continued.
The company said the NOES project is advancing according to schedule and first production is expected in 2027.
ArcelorMittal also made a new 7-year domestic slab supply agreement with Nippon Steel for about 750,000 metric tons annually to ensure a significant portion of the slab requirements are melted and poured in the U.S. They are currently assessing the feasibility of a steelmaking expansion at the site.
“ArcelorMittal has a long and proud history in the United States, a country which values the strategic importance of its steel industry. We are delighted to be further enhancing our presence in this important and attractive market with full ownership of Calvert,” said Mittal.
“We have invested considerably and transformed the facility into a highly strategic steelmaking asset, capable of producing the highest quality, low-carbon-emissions steels, and with considerable further opportunity to grow,” said Aditya Mittal, chief executive officer of ArcelorMittal.
Since ArcelorMittal and Nippon Steel acquired the facility from thyssenkrupp in 2014, more than US$2 billion in CAPEX investments have been made to improve operational efficiency and enhance product offerings to the U.S. automotive and energy markets.
Investments include additional slab bays and cranes, a logistics center for high-volume pipe production and increased coil size, enhancements to the capabilities of the three coating lines and continuous annealing line, and the new steelmaking facility that can produce an estimated 1.5 million metric tons of green steel annually, the company said.
“We have already started the expansion of Calvert’s world-class assets with our new [electric arc furnace] EAF which is supported by a resilient and sustainable domestic supply chain, including [hot briquetted iron] HBI from our plant in Texas,” said John Brett, chief executive officer of ArcelorMittal North America.
The new steelmaking facility, capable of supplying exposed automotive grades, completed commissioning and first heat this month. ArcelorMittal said it is integrated with its HBI facility in Texas and will enable Calvert to supply automotive customers with lower CO2 embodied steel, melted and poured in the U.S.
“Additionally, our planned [non-grain-oriented electrical steel] NOES facility will broaden our product portfolio, supplying the growing automotive mobility demands,” Brett continued.
The company said the NOES project is advancing according to schedule and first production is expected in 2027.
ArcelorMittal also made a new 7-year domestic slab supply agreement with Nippon Steel for about 750,000 metric tons annually to ensure a significant portion of the slab requirements are melted and poured in the U.S. They are currently assessing the feasibility of a steelmaking expansion at the site.
“ArcelorMittal has a long and proud history in the United States, a country which values the strategic importance of its steel industry. We are delighted to be further enhancing our presence in this important and attractive market with full ownership of Calvert,” said Mittal.
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