Constellium employs approximately 11,500 people worldwide and operates 23 manufacturing sites in North America, Europe and Asia. The company is headquartered in Paris with corporate offices in Baltimore and Zurich.
Constellium reports its activities through three operating segments: Aerospace & Transportation, Packaging & Automotive Rolled Products, and Automotive Structures & Industry.
The Aerospace & Transportation segment produces aluminium plate, sheet and extruded products for commercial aerospace, defense, space, transportation and industrial applications. Its production facilities are located in Issoire, France, Ravenswood, West Virginia, and Switzerland.
The Packaging & Automotive Rolled Products segment manufactures aluminium sheet and coil for beverage cans, food and other packaging, automotive body sheet and specialty industrial applications. The segment operates facilities in Neuf-Brisach, France, Muscle Shoals, Alabama, Bowling Green, Kentucky, and Singen, Germany.
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The Automotive Structures & Industry segment designs and manufactures extruded profiles and structural components, including crash-management systems, body structures, battery enclosures and components for automotive and industrial applications. The segment operates facilities in Europe, North America and Asia.
Research and development
Constellium operates three research and development centers, located in: Voreppe, France; Plymouth, Michigan; and at Brunel University of London.
Founded in 1967, Constellium's C-TEC Technology Center is a research and development center located in Voreppe, France. C-TEC specializes in product and process development, product testing and technical assistance to Constellium's manufacturing facilities and customers. During the last 50 years, C-TEC has added more than 600 patent families and trademarks. C-TEC maintains a staff of over 200 R&D technicians and engineers.
Launched in 2013, the Advanced Light Metals Processing Research Center, a collaboration between Constellium, Brunel University and Jaguar Land Rover, was opened as an innovation center dedicated to the automotive industry. In 2016, the partnership between Constellium and Brunel was extended with the opening of the Constellium University Technology Center (UTC), a research center for the design, development and prototyping of aluminium alloys and automotive structural components. In 2016, Constellium opened an additional research hub dedicated to lightweight automotive aluminium in Plymouth, Michigan.
In 2025, Reuters reported that Constellium was testing lower-density alloys, new manufacturing processes and ways to increase aluminium recycling. According to Philippe Hoffmann, president of the company's Aerospace and Transportation business, tests of a wing concept using new alloys and a welding process that eliminates the need for rivets had demonstrated a weight saving of 20%. He also said that friction stir welding could enable greater automation in aircraft-panel manufacturing. Constellium was studying improved recovery of production scrap by alloy, as well as the recovery of aluminium from aircraft at the end of their operational lives.
