Business Area Europe

Today’s leading architecture is dazzling – made even more stunning when clad in stainless steel. Famous buildings around the world showcase the polish and performance of Outokumpu Dillenburg stainless steel.


Coil dimensions produced

  • Width 10 mm and 1,535 mm
  • Cold rolled 0.15 mm and 3.5 mm

Certificates and approvals

  • ISO 9001
  • ISO 14001
  • ISO 50001
  • IATF 16949
  • AD 2000 – Merkblatt W0
  • Quality-Assurance 2014/68/EU

Outokumpu Nirosta GmbH

Outokumpu Nirosta GmbH, Kasseler Straße 100, 35683 Dillenburg
Phone: +49 (0) 2771 390-0
Fax: +49 (0) 2771 390-511
VAT: DE811660170


The modern cold rolling mill in Dillenburg, Germany specializes in stainless steel flat products that meet the toughest surface quality requirements, coil after coil. But when it comes to exterior cladding, stainless steel’s compelling visual appearance puts it in a league of its own.

Dillenburg specializes in customized finishing processes that give thin gauge and bright annealed stainless cladding unique decorative surfaces, especially for applications that put a high priority on aesthetics and perfect surfaces – architecture, automotive design and household goods. The use of stainless steel in construction can earn LEED recognition by the U.S. Green Building Council.

The widest range of high-performance surface finishes worldwide is produced in Dillenburg. Dillenburg stainless steel can be found on the façades of world-famous buildings like the One World Trade Center in New York and the Ping An Finance Centre in China.

Established in the late 1950s as part of the Nirosta unit, Dillenburg continues to bring new innovations to life, spreading the legacy of stainless steel around the world in a sustainable way.

See on video how Outokumpu stainless steel is used in many famous buildings: Reaching for the skies.


Stainless steel with unique finishes is used as cladding on some of the world’s most famous buildings – and much of it made by Outokumpu Dillenburg.


Stainless steel cladding is not just beautiful. It is also sustainable, and that can earn LEED points from the U.S. Green Building Council.



Information about risks and safety measures

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Key capabilities

Perfection and variety

  • Many decorative surfaces are available in the Deco range. Decorative surface finishes can be applied on bright annealed Core and Supra austenitic and ferritic stainless steels, as well as on Forta DX 2205

Durable brilliance

  • Cold rolled stainless steel from Outokumpu Dillenburg is visually compelling and long-lasting

Uniquely versatile

  • Outokumpu’s unmatched quality and expertise brings designers’ visions to life

We produce

Cold rolled coil, strip and sheet

Dillenburg downloads

Explore articles and case stories


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Building the duplex portfolio


Customer education key to adoption of duplex grades


Sustainability is driving the adoption of duplex steel

Case Sodertalje bridge

Bridging the way to a more sustainable and economical future