According to its carbon content, carbon steel can be divided into three types, low-carbon steel, medium-carbon steel and high-carbon steel.
Low-carbon steel is often used in construction and bridge parts, food tanks, auto body parts, and structural shapes (I-beam, channel steel and angle steel).
Strength and hardness of medium-carbon steel is higher than low carbon steel, while plasticity and toughness is lower than low carbon steel. It can be used directly without heat treatment. Medium-carbon steel is often used for railway tracks, train wheels, crankshafts, and gears and machinery parts requiring this combination of properties.
As a result of high wear resistance and hardness, high arbon steel is used for cutting tools, spring high-strength wires and molds.
