Weathering steel: What is it? What types, textures, etc., are available? Is weathering steel suitable for your project?
Corten steel is a versatile material with unique aesthetic value, suitable for applications in modern architecture, urban furniture, and sculpture.
Its distinctive appearance evolves over time, and its high corrosion resistance makes it an ideal choice for architectural projects seeking uniqueness and durability.

We see it everywhere – on grand building and house facades, elegant doors and windows, and weathering steel windows that showcase luxurious home designs. Yet, it remains relatively unknown… Would you like to learn more about this fascinating material?
What is Weathering Steel?
Weathering steel is a steel alloy with a specific chemical composition that gives it superior resistance to atmospheric corrosion. It is characterized by a deep reddish-brown to orange-brown color and a distinctive rusted appearance, hence the name weathering steel… but why is that?

This building material is mainly composed of iron mixed with small amounts of copper, chromium, nickel, and phosphorus. This combination allows it to form a protective oxide layer (surface oxide film) when exposed to the natural environment, thus providing self-protection.
Properties of Weathering Steel
Unlike traditional metals that rust and lose strength over time, weathering steel possesses several unique properties:
Corrosion Resistance: The formation of a surface oxide layer protects the metal from further corrosion.
Durability: It is extremely durable, able to withstand harsh weather conditions, making it ideal for outdoor use!
Low Maintenance Costs: No painting or additional treatment is required. Long-term maintenance costs are also lower.
Unique Aesthetics: It has a distinctive and modern look; the red hue blends well into any design, unlike PVC windows.
These are just some of the highlights, but in reality, it has many more fascinating characteristics…
Performances of Weathering Steel
One of the main characteristics of weathering steel is its resistance to outdoor environments, durability, and sustainability, but it also has other noteworthy advantages:
| Properties of Weathering Steel | YES | NO |
|---|---|---|
| Weather-resistant | ✓ | |
| Fire-resistant | ✓ | |
| Bend-resistant | ✓ | |
| Scratch-resistant | ✓ | |
| Resistant to solvents and acids | ✓ | |
| Recyclable | ✓ | |
| Impact-resistant | ✓ | |
| Resistant to temperature changes | ✓ | |
| UV-resistant | ✓ | |
| Can be cut and modulated | ✓ |








