Mild Steel Chemical Composition

Due to its low carbon content, low-carbon steel exhibits a certain degree of ductility and workability, but also exhibits relatively low hardness.

Manganese and silicon in low-carbon steel can enhance strength and hardness to a certain extent. However, phosphorus is a common impurity that can impair the toughness and plasticity of steel pipes. Sulfur is also a common impurity that can impair ductility and toughness. The levels of these two harmful impurities are strictly controlled.