Carbon steel
Carbon steel is a class of carbon content of more than 0.02% less than 2% (more than 2% of the known as cast iron, less than 0.1% is called iron), and very few other elements of steel, The highest metal material, relatively higher for other components of steel called alloy steel. It is usually used in the need for strength, hardness and wear resistance of metal parts, such as cutting tools, cables, piano lines, springs and knives, etc., after the formation of processing, parts usually need to be processed and tempered. The higher the carbon content of steel, the higher the hardness, strength and abrasion resistance after heat treatment. Carbon steel is divided into high carbon steel, medium carbon steel and low carbon steel, these three kinds of carbon steel and divided into two kinds; according to the characteristics of high carbon steel hard and brittle, low carbon steel soft and resistant to extension. ...