Carbon steel is a steel with carbon content from about 0.05 up to 2.1 percent by weight.  There are other chemical elements besides carbon, including elements such as silicon and sulfur. In general, the higher the carbon content in carbon steel, the greater the hardness and the higher the strength, but the lower the plasticity.

2. What are the classifications of carbon steel according to different conditions?

1. According to the use, carbon steel can be divided into three categories: carbon structural steel, carbon tool steel and easy-to-cut structural steel, and carbon structural steel can be divided into engineering construction steel and machine manufacturing structural steel. two kinds.

2. According to the method of smelting, it can be divided into two categories: open hearth furnace steel and converter steel.

3. According to the method of deoxidation, 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 (higher phosphorus and sulfur), high-quality carbon steel (lower phosphorus and sulfur) and advanced high-quality steel (phosphorus, sulfur lower) and special grades of high-quality steel. Among them, the price of ordinary carbon steel structure is very low and the process performance is relatively good. It will be widely used to manufacture some machine parts, while high-quality carbon steel will be used to make some very important parts, such as the casing of automobiles and instruments. etc. Its steel-plastic performance is very good, but its strength is very low.