Corten S235J2W steel is a type of weather - resistant structural steel belonging to the European standard1. Here is an introduction to it:

Basic Information1: Its digital code is 1.8961, and it complies with the EN 10025 - 5:2019 standard. It is usually delivered in hot - rolled or normalized conditions. This steel is mainly used in structures that are exposed to the atmosphere for a long time, such as railways, vehicles, bridges, and towers, due to its good corrosion - resistance and weldability.

Chemical Composition: It mainly contains elements such as carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni), and copper (Cu). The approximate content is that the C content is ≤0.17%, Si content is ≤0.35%, Mn content is ≤1.40%, P content is ≤0.030%, S content is ≤0.030%, and it also contains a small amount of Cr, Ni, Cu, etc3. These elements work together to enhance the steel's corrosion - resistance and mechanical properties.

 

 

 

Mechanical Properties: The yield strength of S235J2W steel is ≥235 MPa, the tensile strength is in the range of 360 - 510 MPa, and the elongation is ≥18%2. Additionally, it has good impact toughness, with an impact absorption energy KV2 (J) ≥27 at - 20°C2.

Advantages

Good Corrosion - Resistance: The addition of elements such as copper, chromium, and nickel forms a dense and stable rust layer on the steel's surface, which can effectively isolate the steel from the outside environment, reducing the rate of corrosion.

Excellent Weldability: It has good welding performance, allowing for easy connection and processing of steel components, which is beneficial for the construction and manufacturing of large - scale structures.

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