Pros Of Corten Steel

Using Corten steel has the following advantages:

• Durability – Corten steel is a durable type of metal that can last for decades, depending on where it is and how it’s finished.
• Anti-corrosive Properties – The developing rust layer that forms over the Corten steel will help provide corrosion resistance.
• Highly Resistant To The Weather – The prolonged exposure of Corten steel to harsh environmental and weather results in the formation of rust that acts as a protective coating. It prevents corrosion and deterioration of the material by allowing rust to dry quicker and thicker and then developing a beautiful patina.
• Protective Self-regenerating Surface Layer – The layer protecting the surface develops and continues to regenerate when subjected to the weather.
• Distinct Rust-like Appearance That’s Great For Aesthetics – Corten steel or weathering steel often blends well with the environment, and its appearance even improves with time. Its distinct appearance makes it ideal for many types of sculptures, architecture, or landscaping work.
• Low Maintenance Requirement – The rust formation seals the surface and creates a protective layer. It also reduces the amount of glare that’s common on standard metals. As a result, the amount of maintenance needed becomes reduced. You only need to clean and inspect Corten steel products or structures. Cleaning means rinsing the rusted surface with water to remove any natural debris or contamination.
• Cost-effectiveness – Corten steel may be more expensive than mild or ordinary steel to initially purchase, but you will spend less money on maintaining it; making it more cost effective in the long run. 
• Environmentally Friendly – Corten steel is an environment-friendly option that’s sustainable and recyclable.

Cons Of Corten Steel

Below are the drawbacks to using Corten steel.

• Retention Traps – The disadvantage of using Corten steel or weathering steel is that it’s not 100% rustproof. If used in buildings and water accumulates in its pockets, these areas may have higher corrosion rates because continuous damp or wet conditions prevent the oxides to crystallise. The potential to trap moisture means you should be careful how you hang metal wall art outdoors. 
• Staining – The initial surface weathering of Corten steel may cause rust staining on nearby surfaces. This can be avoided by using designs that drain loose rust products onto neighbouring surfaces. Choosing the right metal art design will help mitigate this risk. 
• Compatibility With Climates – Corten steel is not compatible with all climates. It is sensitive to humid climates. In these areas, the protective patina may not form properly, and the steel may continue to corrode. 
• Welding Technique – Welding Corten steel requires similar precautions as when welding mild steel. It can be welded manually and mechanically, but the difference is the need for a special filler material to produce the weathering steel weld in some cases. To get identical mechanical properties in the weld and in the base material, suitable welding consumables and welding conditions must be used.