The new electrical steels line at ArcelorMittal France’s Mardyck site produces its first industrial coil and begins operations

Dunkirk, March 31, 2026

On Thursday, March 26, the teams from the electrical steels department at the Mardyck site (Nord) successfully produced the first industrial coil on the new production lines.

This milestone is essential, as it will allow the teams to adjust and refine industrial tools and processes to enable a steady ramp‑up, leading to the final validation of all lines for the delivery of high‑quality products to customers.

The electrical steels produced by ArcelorMittal at the Mardyck and Saint‑Chély‑d’Apcher (Lozère) sites are critical to the development of e‑mobility and therefore contribute to the energy transition. They are essential for manufacturing all electric motors and generators used in automotive applications, wind turbines, and other industrial equipment.

Achieving full operational capacity

Up to 400 people contributed to the development of the project, the construction of the new lines in Mardyck, and the preliminary tests required to produce a first coil on the first three lines of the new production chain: the preparation line, the annealing‑coating line, and the slitting line.

With the first coil - over 17 tonnes and nearly 4 kilometers long - the new production line has entered a decisive phase.

The ramp‑up of a new industrial tool requires strong commitment and high standards in terms of safety, quality, and reliability, as highlighted by Bruno Ribo, CEO of ArcelorMittal France:

“I warmly commend the constant efforts of the teams. I know how much energy was required to reach this essential milestone. I would like to thank all the teams involved, as well as our partners. We will now focus on ramping up production and making the first deliveries - with safety, of course, remaining our top priority.”

Several months will be needed before the new lines reach their full operational capacity. The skills, expertise, and dedication of the 175 employees on the new team, together with the experience and know‑how of the ArcelorMittal group, will be key drivers of success.

A strategic growth project for the ArcelorMittal group

The new electrical steels production line at the ArcelorMittal France Mardyck site is a strategic growth project for the ArcelorMittal group. It will triple its electrical steel production capacity in Europe.

Together with the existing production unit in Saint‑Chély‑d’Apcher, ArcelorMittal’s electrical steel capacity in Europe will reach 295,000 tonnes per year. All electrical steels produced by ArcelorMittal in Europe will be manufactured in France, strengthening the French ecosystem dedicated to e‑mobility and the energy transition.