ArcelorMittal Takes Full Ownership of AM/NS Calvert After Acquiring Nippon Steel’s Stake, Plans $1.2 Billion Expansion
In a decisive move to consolidate its presence in the U.S. steel market, ArcelorMittal has completed the acquisition of Nippon Steel Corporation’s 50% stake in AM/NS Calvert, thereby gaining full ownership of one of North America’s most advanced steel finishing facilities. The plant, now rebranded as ArcelorMittal Calvert, is located in Alabama and has been a strategic joint venture since 2014.
With this acquisition, ArcelorMittal has secured complete operational and strategic control of a facility that is crucial to its U.S. growth strategy, particularly in supplying low-carbon, high-performance steel to the automotive, electrical, and energy sectors.
A Game-Changing Facility with Green Credentials
AM/NS Calvert, originally acquired for $1.55 billion, boasts an annual production capacity of 5.3 million metric tonnes of flat rolled steel, making it one of the most modern steel processing facilities in the region. Since its acquisition, ArcelorMittal and Nippon Steel had invested more than $2 billion to enhance its infrastructure, including a recently launched steelmaking unit with a 1.5 million-tonne low CO₂ steel capacity.
This capability is particularly vital for meeting growing demand for sustainable steel solutions from automakers and industrial clients pivoting towards environmentally responsible sourcing.
Major Investment in Electrical Steel
Signaling its long-term commitment to innovation and clean manufacturing, ArcelorMittal has also announced a $1.2 billion investment in building a non-grain-oriented electrical steel (NOES) production facility at the Calvert site. This plant is expected to be operational by 2027, with an annual capacity of 150,000 metric tonnes of specialized electrical steel, used in electric vehicles (EVs), wind turbines, and energy-efficient transformers.
This expansion aligns with the surging demand from renewable energy and EV sectors, both of which require advanced, lightweight, and energy-efficient materials.
Continued Ties with Nippon Steel
Despite exiting the joint venture, Nippon Steel will maintain a strategic relationship with ArcelorMittal through a seven-year slab supply agreement, ensuring the delivery of 750,000 metric tonnes of slabs annually. This arrangement secures raw material flow to support the facility’s uninterrupted production and helps maintain global supply chain continuity.
Financial and Strategic Outlook
The acquisition is expected to deliver a $1.5 billion exceptional gain in ArcelorMittal’s Q2 2025 results. However, it also increases the company’s net debt by approximately $1.3 billion. Analysts suggest that while the short-term financial impact includes higher leverage, the long-term benefits outweigh the risks due to enhanced operational flexibility, strategic independence, and growing market share in the U.S.
“This is not just a financial deal—it’s a foundational step toward future-proofing our position in the global steel landscape,” an ArcelorMittal executive said in a post-announcement briefing.
By consolidating full ownership of the Calvert facility and committing billions to green and next-gen steel production, ArcelorMittal is reinforcing its leadership in the U.S. steel industry. The move not only enhances its production capabilities but also aligns with global transitions toward cleaner manufacturing and sustainable industrial practices.