What is the chemical composition of SM520C steel

SM520C steel is a low-alloy, high-strength structural steel commonly used in the construction of bridges, buildings, and other infrastructure projects. The chemical composition of SM520C steel includes:
Carbon (C): 0.20% maximum
Silicon (Si): 0.55% maximum
Manganese (Mn): 1.60% maximum
Phosphorus (P): 0.03% maximum
Sulfur (S): 0.03% maximum
Copper (Cu): 0.35% maximum
Chromium (Cr): 0.35% maximum
Nickel (Ni): 0.25% maximum

These elements work together to provide SM520C steel with its high strength and durability properties. The addition of copper, chromium, and nickel can enhance the material's resistance to corrosion while maintaining its toughness and weldability.

It's important to note that the actual chemical composition of SM520C steel may vary depending on the manufacturing process and heat treatment applied. It's recommended to consult with suppliers and engineers to determine the appropriate material properties for a given application.