What is the effect of chemical elements in weather resistant steel plate?

Weather resistant steel plate is a kind of atmospheric corrosion-resistant steel plate. It is to add a small amount of weathering elements into ordinary carbon steel to improve the weathering performance of steel. Weather resistant steel plate and stainless steel are different. They will also produce corrosion after contacting with the atmosphere for a period of time. However, this layer of corrosion is a dense oxide film, firmly attached to the surface of the base layer, so as to reduce further corrosion of the steel plate. In order to deepen your understanding of weather resistant steel plate, we summarized the role of various elements of weather resistant steel plate.

1. Carbon is harmful to the atmospheric corrosion resistance of steel. Affect welding, cold brittleness and stamping properties. Carbon in weathering steel is controlled at a certain content.

2. Copper is resistant to atmospheric corrosion. Copper forms an anti embroidering and blocking layer on the steel substrate, but copper forms intergranular action between crystals, which is easy to produce cracks.

3. Phosphorus is one of the main elements to improve atmospheric corrosion resistance. However, phosphorus affects the weldability of steel.

4. Nickel is a relatively stable element, which can change the corrosion potential of steel from positive to positive, and improve the corrosion resistance of steel by increasing the stability of steel.

5. The use of silicon in combination with copper, chromium, phosphorus and calcium can improve the weather ability of steel. The higher silicon content is beneficial to refine iron hydroxide and reduce the overall corrosion rate of steel.
Weather resistant steel plate is widely used in many industries because of its good weather resistance. In order to reduce the corrosion of open-air buildings, weather resistant steel plate is often used as building steel in construction to protect buildings.