Cor-Ten S7

Create a rusty, life-like rhythm with Design Cor-Ten® S7 for ventilated Cor-Ten facade systems.

Applications: facade and ceiling surfaces.

Ruukki® emotion
Available also with perforation and backlighting.

The information on our website is accurate to the best of our knowledge and understanding. Although every effort has been made to ensure accuracy, the company cannot accept any responsibility for any direct or indirect damages resulting from possible errors or incorrect application of the information of this publication. We reserve the right to make changes.

Copyright © 2019 Ruukki Construction. All Rights Reserved.

    Model name
    Cor-Ten S7
    Effective width
    1119 mm
    Total width
    ~1169 mm
    6 mm
    33 mm
    Maximum length
    3550 mm
    Minimum length
    200 mm

    Perforation layout


    10 % perforation, hole size d = 4 mm, centres c = 12 mm
    15 % perforation, hole size d = 4 mm, centres c = 10 mm
    30 % perforation, hole size d = 4 mm, centres c = 7 mm


    Material Material thickness (mm) Weight (kg/m2) Surface treatment Reaction to fire
    Steel Cor-Ten A 1.0 8.77 - A1
    Due to its unique chemical composition, Cor-Ten weather-resistant structural steel sheet has a significantly better ability to resist atmospheric corrosion than similar general structural steels. Weather-resistant steel is used in architectural applications without requiring any separate surface treatment. Use of weather-resistant steel thus eliminates the need for surface treatments during the manufacturing and operational periods, in turn lowering the environmental load and costs throughout the product’s life cycle.

    The weather resistance of the product is due to its oxide layer, i.e. the patina which forms on the steel surface which is resistant to the action of alloys and has low oxygen permeability. The oxide layer is created when weather-resistant steel is wetted and dried repeatedly. The protective surface layer forms in normal weather conditions within 18…36 months. 

    The patina layer is initially reddish brown in colour, becoming darker in tone over the course of time. In industrial environments the patina forms more rapidly on the steel and darkens more than in cleaner rural environments. The protective patina layer cannot form, however, if the surface of the steel is continuously damp or dirty.

    Cor-Ten A grade steel is used for the manufacture of profiles (S355J0WP-COR-TEN A). 



    Facade cladding system, completed with flashings, fasteners and support studs, provides a fully finished facade, as well as quick and easy installation.

    Design tools

    Design tools

    To make both architectural and structural design work easier, with accurate product information in 3D form, we offer a selection of CAD / BIM -objects and software tools, to be downloaded from the Software Toolbox portal.

    Ready modelled BIM objects

    Download objects for ArchiCAD
    Download objects for Revit

    Detail drawings (.dwg)

    Detail drawings (.pdf)


    Order forms


    The lamellas are delivered to the installation site in thin plastic-protected wooden boxes. Basic structure of the package is always same. Different package solutions are available for different needs. The package solutions are dependent also on delivery area.


    The number of the lamellas must be checked upon delivery. The lamellas can be storaged in their packages. The opened packages should be protected from moisture.

    The lamellas must be handled properly to prevent any damages. Cutting and any other machining of the lamellas must be performed using appropriate tools to ensure work safety and a fault-free result.




    Suspensions should be avoided in the facade. If absolutely necessary, the supports for the suspension must be placed at the vertical joint all the way to the substructure or frame structure.


    Fasteners must be checked during maintenance work. To check the health of the fasteners, open a few fasteners (unless the fasteners are concealed) in different parts of the building. Pay special attention to the general appearance of the fastener and the health of the gasket under the cover, keeping water out of the joints. Replace worn fasteners.


    Maintain a journal of facade maintenance work. Write down information such as the performed tasks, the time, the facade area involved, who performed the work and what agents were used.

    Certificates & approvals


    A print containing package-specific information such as order, load and package numbers, contact information, content of the package (profile type and dimensions) and package weight is attached to the package.