Due to the continuous development of urbanization construction, materials in the building materials market have emerged one after another. Although these materials are relatively common in our daily life, people who do not usually run in the building materials market may not know carbon steel. material, we will not understand its advantages and disadvantages, and even we will ignore its existence. Next, today I will explain to you what kind of material carbon steel is? And what are its advantages and disadvantages?
1) What material is carbon steel?
Carbon steel mainly refers to the steel whose mechanical properties depend on the carbon content in the steel, and generally does not add a large amount of alloying elements, and is sometimes called plain carbon steel or carbon steel. Carbon steel, also called carbon steel, refers to an iron-carbon alloy with a carbon content of less than 2% WC. In addition to carbon, carbon steel generally contains a small amount of silicon, manganese, sulfur, and phosphorus. Generally, the higher the carbon content of carbon steel, the greater the hardness and the higher the strength, but the lower the plasticity.
2) What are the advantages and disadvantages of carbon steel?
Advantage:
1. Carbon steel can get higher hardness and better wear resistance after heat treatment.
2. The hardness of carbon steel in the annealed state is very moderate, and it also has good machinability.
3. The raw materials of carbon steel are very common, easy to obtain, and the production cost is relatively low.
Disadvantage:
1. The hot hardness of carbon steel will be poor, because when the working temperature of the tool is greater than 200 degrees, its hardness and wear resistance will drop sharply.
2. The hardenability of carbon steel is very low. The diameter of the fully hardened steel is generally about 15-18 mm during water quenching, while the diameter or thickness of the carbon steel is only about 6 mm when it is not quenched, so it will be easier to deform and crack.
3) What are the classifications of carbon steel?
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.
2. According to the smelting method, carbon steel can be divided into three categories: open hearth steel, converter steel and electric furnace steel.
3. According to the deoxidation method, carbon steel can be divided into boiling steel, killed steel, semi-killed steel and special killed steel, which are represented by codes F, Z, b and TZ respectively.
4. According to the carbon content, carbon steel can be divided into three categories: low carbon steel, medium carbon steel and high carbon steel.
5. According to the content of sulfur and phosphorus, carbon steel can be divided into ordinary carbon steel (the amount of phosphorus and sulfur will be higher), high-quality carbon steel (the amount of phosphorus and sulfur will be lower), high-grade high-quality steel (which contains lower phosphorus and sulfur content), and special-grade high-quality steel.
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