Carbon steel mainly refers to steel whose mass fraction of carbon is less than 2.11% and does not contain specially added alloy elements. Sometimes referred to as ordinary carbon steel or carbon steel. Carbon steel, also called carbon steel, refers to iron-carbon alloys with a carbon content Wc of less than 2.11%. Carbon steel generally contains a small amount of silicon, manganese, sulfur, and phosphorus in addition to carbon.
(1) Carbon steel can be divided into three types: carbon structural steel, carbon tool steel and free-cutting structural steel according to the application. Carbon structural steel is further divided into engineering construction steel and machine-made structural steel;
(2) According to the smelting method, it can be divided into open hearth steel and converter steel;
(3) According to the deoxidation method, it can be divided into boiling steel (F), killed steel (Z), semi-killed steel (b) and special killed steel (TZ);
(4) According to the carbon content, carbon steel can be divided into low carbon steel (WC≤0.25%), medium carbon steel (WC0.25% -0.6%) and high carbon steel (WC> 0.6%) );
(5) According to the quality of steel, carbon steel can be divided into ordinary carbon steel (containing phosphorus and sulfur), high-quality carbon steel (containing phosphorus and sulfur) and high-quality steel (containing phosphorus and sulfur) ) And premium quality steel.
