# Salzgitter to acquire full ownership of HKM slab mill in Duisburg

Salzgitter AG, through its subdivision Salzgitter Mannesmann, is acquiring the remaining 70% stake in Hüttenwerke Krupp Mannesmann (HKM) in Duisburg from thyssenkrupp Steel (50%) and Vallourec (20%), gaining full ownership of the slab mill with a capacity of around 5 million tonnes/year. The European Commission cleared the transaction on May 7, 2026.

- Type: Acquisition
- Announced: 2026-05-07
- Where: Duisburg, Germany
- Status: announced
- Capacity: 5 million tonnes/year of slab
- Products: semi-finished carbon steel slabs
- Sectors: [Steel and Metal Products](https://endata.com/sectors/steel-metal-products.md)

## Companies

- [Vallourec](https://endata.com/companies/335.md) (target)
- [Salzgitter](https://endata.com/companies/29655.md) (acquirer)
- [thyssenkrupp Steel](https://endata.com/companies/34054.md) (target)
- [Hüttenwerke Krupp Mannesmann](https://endata.com/companies/86327.md) (target)

## Sources

- [eurometal.net](https://eurometal.net/salzgitter-acquisition-of-duisburg-mill-gets-clearance/), 2026-05-07: "The European Commission, under the EU Merger Regulation, has approved the acquisition of German mill Hüttenwerke Krupp Mannesmann (HKM) in Duisburg by Salzgitter Mannesmann."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.