All about the strong Corten steel
Corten steel is just as strong as structural steel and has an exceptionally long service life. Its strength lies in the special rust layer (patina) that protects the underlying metal and virtually halts the corrosion process. As a result, the material retains its shape, is highly resistant to all weather conditions, and is completely maintenance-free.
What is Corten steel?
Corten steel is also known as weathering steel. The COR comes from corrosion resistant and the TEN from tensile strength. In short, this material can withstand wind and rain. The reason for this is in the special rust coating. In fact, this type of steel was developed to eliminate the need for painting while creating a stable rust-like appearance. Corten steel therefore does not rust in the same way as normal steel does. With normal steel, the rust layer is porous, allowing air and water to pass through it. As a result, all steel will eventually rust.
With Corten steel, when rusting, a so-called “patina layer” develops. This is non-porous, so the rusting process is limited to the outer layer. This forms a protective coating so that Corten steel can protect itself from all weather influences. As a result, the lifespan of this material is very high. Because the Outdooroven is made of thick Corten steel, it can be placed outside for years without any problems.
The rust layer has to develop first
Upon delivery the Outdooroven might look different than expected. That is because the oven is delivered without a layer of rust. However, treatment is not necessary before using it. When placing the Outdooroven outside, the rust layer will develop within a few weeks or months. It is not possible to say exactly how long this process will take, as it depends on weather conditions that will vary from city to city and country to country. So these environmental factors such as sea breezes and trees will cause each oven to rust in a different way. This way, every Outdooroven is unique!
How do you maintain Corten steel?
To extend the lifespan of the corten steel outdoor oven, it is recommended to clean the oven at least once a year with a sturdy brush. Additionally, we advise removing leaves and other moisture-retaining debris from the oven, as this can damage the protective rust layer.
The overview below provides the key maintenance guidelines for a maximum lifespan:
| Maintenance Action | Frequency | Purpose / Result |
| Brushing with a sturdy brush |
At least once a year
| Removes loose soot and surface dirt without damaging the patina layer. |
| Removing leaves and debris | Regularly (especially in autumn) | Prevents stagnant moisture from damaging the protective rust layer or causing rust-through. |
| Ensuring proper drainage | Continuously | Guarantees the natural wet-and-dry cycle necessary to preserve the corten steel. |
It is therefore clear that the rust layer on the outdoor oven is not just for its rugged appearance. Thanks to the use of corten steel, the outdoor oven will provide many years of enjoyment.
Click here for more maintenance tips.