The chemical composition of ASME SA213 is primarily based on medium carbon alloy steel, with specific alloying elements added to achieve the required mechanical properties and corrosion resistance. The specific chemical composition will vary according to different material pands. Taking SA213 T22 as an example, its chemical composition includes carbon (C) in the range of 0.05~0.15, manganese (Mn) in the range of 0.30~0.60, and the contents of phosphorus (P) and sulfur (S) do not exceed 0.025. The content of silicon (Si) does not exceed 0.50, the content of chromium (Cr) is in the range of 1.90~2.60, and the content of molybdenum (Mo) is in the range of 0.87~1.13.
The characteristics of ASME SA213 are mainly reflected in the following aspects:
1. High strength: It has high tensile strength and yield point, can withstand large loads and impacts, and is suitable for various environments that need to withstand high pressure and stress.
2. High corrosion resistance: It has good corrosion resistance in various complex environments, such as acids, alkalis, salts and other chemical substances and extreme environments such as high temperature and low temperature, thus ensuring the long-term stable operation of the equipment. .
3. Good welding performance: Made of high-quality steel, cracks, pores and other problems are not prone to occur during welding, ensuring welding quality and reliability, making the steel pipe more convenient and safe during connection and installation.
ASME SA213 has a wide range of applications, especially in high temperature and high pressure working environments. The following are its main application areas: Boiler manufacturing: used for heating surface tubes, economizers, superheaters, reheaters and other components of high-pressure boilers. Petrochemical industry: In petroleum, chemical and other processes, it is used to manufacture various reactors, heat exchangers, pipelines and other equipment. Electric power industry: In the electric power industry, it is used to manufacture key components such as superheaters and reheaters of supercritical boilers.
