Materials

The material selection of bolts should be determined according to the actual use environment and connection needs. When selecting bolt material, it is necessary to consider factors such as strength, corrosion resistance, weight, etc., to ensure the reliability and safety of the connection. Common bolt materials are carbon steel, stainless steel and non-ferrous metals. According to the different carbon content, carbon steel bolts can be divided into low carbon steel, medium carbon steel and high carbon steel. According to the tensile strength and yield strength of the bolt, it can be divided into 4.8, 6.8, 8.8, 10.9, 12.9 and so on. Stainless steel bolts are composed of iron, chromium, nickel and other metal alloys, which have good corrosion resistance and are suitable for connection in humid and corrosive environments. Stainless steel bolts are usually used in outdoor equipment, marine engineering and other occasions to ensure the long-term stability of the connection. Bolts made of non-ferrous metals such as copper and aluminum are often used in occasions with high requirements for strength and corrosion resistance. Copper bolts can be used in situations where corrosion resistance and electrical conductivity are required, and aluminum bolts can be used in lightweight materials and high-temperature environments.