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Palace of Justice in Antwerp

The construction of the new Palace of Justice in Antwerp is the result of an international architectural competition.

The contract was awarded to the Richard Rogers Partnership team in association with Ove Arup and VK Studio offices who proposed an efficient, subtle and transparent building with a powerful symbolic image.

These “sail” roofs are the architectural focal point of the project. An extensive design study was necessary to determine the type of materials and construction methods required for these roofs. For example, wind tunnel studies were needed to determine the loads incurred during extreme weather. Each of the 32 roof modules is formed from four prefabricated quarters, that are then assembled on-site with a system of bolts. The geometric shape traced by these quarters is a hyperbolic paraboloid. This method simplifies the structural assembly and the fabrication of the components. Glued and laminated timber beams disposed on a frame in line with the straight lines of the sails and are mounted onto a tubular steel frame. Then three layers of planks are successively screwed on to form the shell.

The final roof covering is achieved with strips of 316L stainless-steel with Uginox Matt coating. Several technical constraints have pushed the designers towards this type of material: Natural durability, particularly when a site is exposed to maritime influences, the possibility of using welding techniques, complex geometry with either little or no angles in some places and extreme slants in others, lack of access for maintenance and of course; the visual aspect and colour.

To obtain a perfectly water-tight installation, the stainless-steel sheets are welded in a continuous seam using an automatic machine, thus creating an almost monolithic surface.

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House Extension Bogindhu

Bogindhu is a large house extension and refurbishment of Bogindhu farmhouse in Aberdeenshire. The Project required a significant amount of work to the existing farmhouse including the removal of ground floor and first floor structures.

All internal walls of the original house were removed to reorganise the spaces within. The original external walls of the house were stripped back to expose the bare stone and re-lined to include insulation in order to increase the efficiency of the house.

The new house extension was designed as a contemporary barn structure, placed in an ‘L’ formation to complete the missing side of the farm court. The first floor was marked by a stainless steel band ( Uginox Top, type 316) which serves as a cill for the cladding and in places as a gutter. The roof is a 0.5 mm standing seam system set at 500 mm which was hand-formed on site and, at just 4kg / m², weighs considerably less than a similar system in copper, zinc or aluminium. Moreover, they prefered to replace the proposed zinc roof with a stainless steel one due to concerns that the run-off water from the larch cladding, which contains tannins, may have discoloured the zinc.  Uginox Top’s durable matt finish is designed to harmonise with a wide variety of building styles and materials, in this case vertical timber façades, full height windows and stone walls.

Internally, the house extension is deliberately different from the existing stone house, the spaces are large and open with high ceilings. The double height space overlooking the living room provides a sense of drama and contrast to the smaller, more intimate spaces of the cottage.

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Stainless Steel – Courthouse, Strasbourg – France

Refurbishment of the Court of Strasbourg

After the French defeat in 1870 and the loss of Alsace-Lorraine to the German Empire, Strasbourg paid a heavy price. Unchanged since the 15th century, this historic town had to adapt. The adoption in 1878 of a development plan designed by a municipal architect Jean Geoffroy Conrath planned the expansion of the city to the north, beyond the fortifications of the 17th century. The desire from the new imperial power to found the Neustadt, or “New city”, responded to the need to establish its authority within an exemplary capital with official buildings and housing. Stretching beyond Ill Canal which later became the Canal du Faux-Remparts, the Neustadt was the place of some remarkable constructions such as the station (1883), the Palais de l’Université (1884) or the Palais Impérial (1888), creating a common eclectic construction style. The Neustadt was associated for far too long with a painful period in history but is today the symbol of an unwavering French-German reconciliation underpinned by a strong European culture.

The restructuring of the Strasbourg railway station in 2007 by the SNCF architecture agency Arep, which fits snuggly under a glass shell, triggered the town’s awareness which then embarked on a drive to protect the future of the buildings in the Neustadt. After the university library was restored in 2014 by the architect Nicolas Michelin, it was time for the Palais de Justice – built in 1898 by the architects Johan-Karl Ott and Skjold Neckelmann – to gain a new leash of life. This exceptional building of 14,920 m2 was part of a large-scale renovation project between 2014 and 2016 carried out by the Spanish Architect firm, Garcès-de Seta- Bonet.

Located within a densely populated area, the massive building has four grey sandstone facades displaying classic architectural elements (pediments, low relief carvings, columns…). Yet transforming an historical 19th century building into a 21st century court house requires the functional needs of modern public equipment to be supported whilst incorporating updates to comply with security standards applicable to establishments servicing the public (ERP rules). Well-designed from the outset, the internal functional organisation was preserved and adapted to current challenges, with people flow reviews depending on the changing trends in use and the creation of an extension. Designed to hold 225 magistrates and civil servants, this mammoth project involved three delicate construction sites which were located in the heart of the Alsace capital.


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Our Top Five Must Read Blog Posts

1, Famous Buildings Constructed Using Stainless Steel

Stainless steel is an ideal construction material in many ways, strong and resistant to corrosion. It has been used as a building material since the 1920s, which attests to its longevity and its enduring popularity. Some of the world’s most recognisable buildings (and other landmarks such as bridges, statues and monuments) have used stainless steel in their construction… Read More

2, The Benefits of Stainless Steel in Architecture

Stainless steel has been used as a construction material since the 1920s, so it is certainly not a new product. In fact, its rising popularity in recent years is testament to how suitable it is for use in the building industry, with uses ranging from roofing and safety railings to architectural cladding. It has also been shown, due to its use over so many years, to have a long lifespan, which is an important consideration in construction… Read More

3, The advantages of stainless steel in Roofing

Stainless steel is a « green material » par excellence and is infinitely recyclable and recycled. Within the construction sector, its actual recovery rate is close to 100%… Read More

4, 8 Famous Stainless Steel Monuments and Sculptures

We’ve picked 8 Famous Stainless Steel Monuments and Sculptures from around the world… Read More

5, Stainless Steel A 100% Recyclable Product

Stainless steel is the “green material” par excellence and is infinitely recyclable. Within the construction sector, its actual recovery rate is close to 100%… Read More



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Uginox Patina – Weathering

Electrolytic tin plating

Uginox Patina K44 stainless steel sheeting features electro-tinned coating (100% pure tin) on both sides. This thin metallic coating does not provide corrosion resistance; the plating in fact serves two purposes:

  • Formation of a homogenous, matt grey finish (known as patina).
  • Gives a surface which promotes easy application of soft solder in complex details.

Patina formation

Over time, weathering causes the electroplated tin to form a uniform, matt grey finish (a patina) on the exposed surface of the rust free stainless steel base material. Patina formation takes a correspondingly longer time on unweathered surfaces. During the handling process handprints and mild staining can occur that may cause temporary blotchiness to the surface, these disappear as the patination of the surface develops into an even, matt grey surface finish. Uginox Patina K44 is supplied in an unweathered condition.

Applications of Uginox Patina – Uginox Patina K44

Uginox Patina K44 has proved itself to be an exemplary standard in aggressive environments. Accordingly, Uginox Patina K44 is more suitable for applications in aggressive industrial atmospheres and also in near coastal regions. Uginox Patina K44 is highly resistant to exposure to humic acids and is ideally suited to all kinds of rooftop vegetation. When attacked by particularly aggressive materials, in rare cases discoloration and streaking may form on the surface; however, these do not lead to corrosion of the stainless steel material. Should it be necessary to avoid such aesthetic issues, the use of Uginox Top is recommended as discoloration and streaking from the byproducts of chemical reactions do not typically form on its rolled matt surface. As with all materials individual material combinations may increase overall corrosion damage.

For more information please read the Uginox Technical Bulletin.

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Stainless Steel World 2019 Conference & Expo


This year’s event is set to break all previous attendance records and will offer networking opportunities that you simply cannot miss!

Walk around the exhibition hall and take in the products and personalities of more than 280 world-class companies showcasing their expertise to more than 6500 middle-to-higher management visitors.

At every exhibition stand experienced technical and sales staff will be on hand to update all on the availability of their company products and services and provide hands-on solutions to practical challenges.

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K44 Stainless Steel Characteristics

K44 18% chromium with molybdenum, titanium and niobium stabilized.

General characteristics

The principal features of our K44 grade are:

  • Very good resistance to pitting corrosion in chloride media, better than 304L (18-9L) and 316L (18-11ML) grades.
  • Insensitivity to stress cracking corrosion and intergranular corrosion.
  • Low toughness at transition temperature, even in welded zones.
  • good drawability.
  • good weldability.
  • thermal conductivity higher than that of austenitic grades, with a lower thermal expansion coefficient.


  • Hot water tanks
  • Boilers
  • Fume ducts
  • Heat exchangers
  • Sugar and sanitary tubes
  • Photovoltaic frames
  • Solar tanks
  • Solar panels
  • Cooking and catering equipment
  • Water tanks

Product range: Forms: sheets, blanks, coils, discs.
Thicknesses: 0.40 to 4 mm
(for other thicknesses, please consult us).
Width: according to thickness, consult us.
Finish: cold rolled, 2R and 2B (other finishes, please consult us).

Chemical composition

For the full technical specification, please download the K44 data sheet.

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Stainless Steel A 100% Recyclable Product

Stainless steel is the “green material” par excellence and is infinitely recyclable. Within the construction sector, its actual recovery rate is close to 100%.

It is environmentally neutral, inert and when in contact with elements such as water it does not leach compounds that might modify their composition. These qualities make it a material which is ideally suited to building and construction applications: roofs, facades, rainwater recovery systems, domestic water pipes and swimming pools as well as bridges and pedestrian bridges.

Stainless steel’s longevity fulfils the requirements of sustainable construction. A suitable choice in terms of grade, surface finish, installation and maintenance guarantees the user unrivalled service life.

Construction components in stainless steel are delivered ready to install on site reducing pollution (noise, dust, etc.). Furthermore, during demolition, these can be salvaged for re-use in recycling, adding value.

Stainless Steel 100% recycled 

Today, the material flow for stainless products demonstrates that the recycling of pre- and post-consumer stainless steel scrap is already common practice.
In the production of stainless steel, a scrap blend and other raw materials – chromium, molybdenum, nickel and other elements – are melted together in an electric furnace before going into a converter for refining. The molten stainless steel is then cast into slabs or billets, before the production of plate, sheet, coil, wire or other product forms, in preparation for use by industrial manufacturers. These manufacturers produce the stainless steel items we use every day, including cutlery, pots & pans and kitchen sinks, and inumerable architectural, industrial and other components.

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Stainless Steel and Corrosion

What is corrosion?

Metals, with the exception of the precious metals such as gold and platinum, that are found in their natural state are always extracted from ores; metals have therefore a tendency to revert to their stable state, which corresponds to their original state, that is to say their oxide form.

Metal corrosion is essentially an electro-chemical reaction at the interface between metal and surrounding environment.

Stainless Steel and the passive layer
Steel is an alloy of iron and carbon. Contrary to carbon steel, the presence of a minimum of 10.5 % chromium in the stainless steel gives it the property of corrosion resistance.


However if this protective layer is damaged, the start of corrosion can appear.


What are the major factors of corrosion?

What are the 5 principal types of corrosion linked with the surrounding environment ?

Generalised corrosion is noticed when stainless steel is in contact with an acid medium and localised corrosion is seen in the majority of cases when stainless steel is placed in a neutral chloride environment.