What is low carbon steel?

mild steel is carbon steel with a carbon content of less than 0.25%. Because of its low strength, low hardness and soft, it is also called mild steel. It includes most of the ordinary carbon structural steel and a part of high-quality carbon structural steel, most of which are not used for engineering structural parts without heat treatment, and some of which are used for mechanical parts requiring wear resistance by carburizing and other heat treatment.

The annealed microstructure of low carbon steel is ferrite and a small amount of pearlite, which has lower strength and hardness and better plasticity and toughness. Therefore, its cold formability is good, can be used to roll, bending, stamping and other methods for cold forming. This kind of steel also has good weldability. Mild steel generally refers to steel with carbon content between 0.10 and 0.25%. This kind of steel has low hardness, good plasticity, easy to use cold plastic deformation molding process, welding and cutting, often used in the manufacture of chains, rivets, bolts, shafts, etc.