Corten Steel Protection Coating
Jul 10, 2023
The weather resistance of weather-resistant steel is due to the specially designed chemical composition and distribution of chemical components, which enable it to form a protective layer on the surface of the material under the influence of the environment and weather, and is more corrosion-resistant and weather-resistant than most steel types (such as stainless steel).
A specially designed distribution of alloying elements in weathering steels provides a protective layer, which in turn produces a corrosion-inhibiting effect. The protective layer on the surface of weathering steel will slowly grow and regenerate with the influence of weather. In short, this type of steel relies on the generation of rust on the surface to form a protective layer.
| Cor-ten weathering steel with graded chemical composition (Below % main position, abbreviated iron element component) |
||
|---|---|---|
| Standard grade | Corten A | Corten B |
| C | 0.12 | 0.16 |
| Si | 0.25-0.75 | 0.30-0.50 |
| Mn | 0.20-0.50 | 0.80-1.25 |
| P | 0.01-0.20 | 0.030 |
| S | 0.030 | 0.030 |
| Ge | 0.50-1.25 | 0.40-0.65 |
| Cu | 0.25-0.55 | 0.25-0.40 |
| V | 0.02-0.10 | |
| Ni | 0.65 | 0.40 |
The alloy elements such as chromium and nickel used in weathering steel are less than stainless steel, and the price is usually cheaper than stainless steel. At some point, weathering steel is a corrosion-resistant and economical alternative to stainless steel.
