Corten: the ideal building material for garden, landscape and living areas

A high-quality special steel for metal objects

Corten steel, with its pronounced rust colour, has a very special charm, which is created thanks to surface corrosion. This is a direct result of its composition – a steel-copper-chromium-nickel alloy. The mixing of these materials, under the influence of atmospheric conditions, leads to the formation of an oxide self-protective layer on the base metal, which over time transforms into an adherent and compact patina. Authentic charm and real longevity.

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Corten steel stands for weather-resistant structural steel, where  a barrier layer forms over time on the surface as a result of weathering influences, protecting the material from further corrosion and providing a characteristic patina in warm earthy tones.

Corten steel l has a long service life and does not need to be treated with paint. It is also recyclable.

OD-CUBE BY WARNY uses Corten A steel, which corresponds to a weather-resistant, phosphorus-alloyed structural steel.

CORTEN steel stands for COR (rosion resistance) and TEN(sile strength).

Thanks to its characteristic patina, Corten steel changes its external colours and structures again and again and is therefore increasingly used as a decorative metal element.

OD-CUBE processes the structural steel in a bright-rolled condition. The objects are usually only slightly rusty at the time of delivery.

Patina: A prerequisite for the formation of a good barrier layer is the alternation between dry and humid weather. The optical formation of the surface begins after two to three weeks. If the surface is not exposed to changing weather conditions, there is no formation of the „living“patina.
Depending on the weather conditions, this process is usually completed after two to three years.

Acceleration: OD-CUBE starts russeting immediately after shaping with our special process. This „artificial weathering“begins within a few hours before it is continued in the customer‘s garden or living area. The more light and weather (heat, cold, sunshine) act on the objects used, the quicker the typical Corten surface structure will take shape.

Missing air (e.g. airtight packaging) can turn a still young surface black, although a first layer of stainless steel is already present.
Protective films applied directly to the surface should not interrupt the missing air supply for too long. There is no need to worry, however. The rust-coloured surface will usually  reappear automatically under natural weathering after a few days. If it is cold and too humid, a darker surface colour can be produced. Different colours become more and more similar as the weathering progresses.

You are not likely to find a snail in (raised) beds made of Corten steel  that would  make your vegetables unpalatable. These areas are for the most part an insurmountable obstacle for snails. 1% copper content in the Corten steel  oxidizes with the snail mucus. This irritating substance acts  like a natural brake in most cases and suffices  to prevent the pests from creeping on.

In general, it should be noted that rust particles can settle on the Corten steel patina, e.g. due to the influence of water, which can damage neighbouring surfaces.

Low-grade structural steel, especially in gardens, can dissolve within a few years and set off rust scales, which can damage the substrate or the surrounding area.

First of all we would like to refer to commercially available household remedies (soap and water) applied with soft cloths for minor contamination, with regard to the cleaning of the metal object surfaces and the rust-red deposits on the underlaid floor coverings (in living and outdoor areas) – mostly caused by drainage water.
Acid cleaners are poison for the patina surfaces and preclude any warranty claims.

We therefore recommend a cleaning test on a small surface in all cases. The effect of the cleaner on the surface can therefore be carried out more safely on the larger surfaces.