Chemical composition: Carbon (C) content usually does not exceed 0.16%. Silicon (Si) content generally does not exceed 0.45%.
Manganese (Mn) content is between 0.15% - 0.70%. Phosphorus (P) content does not exceed 0.04%.
Sulfur (S) content does not exceed 0.035%.
Mechanical properties: Yield strength is not less than 235MPa when the thickness is less than or equal to 16mm.
Tensile strength is usually between 360 - 510MPa. The elongation is good, with certain plasticity and toughness.
Weather resistance: By adding specific alloy elements, such as copper (Cu), chromium (Cr), nickel (Ni), etc., it can form a stable rust layer in the atmospheric environment, effectively preventing further corrosion, and the weather resistance is 2 - 8 times that of ordinary carbon steel.
Application areas: Commonly used in the manufacture of steel structures exposed to the atmospheric environment for a long time, such as bridges, towers, railway vehicles, containers, etc., and also suitable for some building structures that require weather resistance.
Advantages and characteristics: It has good comprehensive mechanical properties and meets the structural strength requirements. It has excellent atmospheric corrosion resistance and reduces maintenance costs and repair times. It has good welding performance and is easy to process and connect.