The chemical composition of Q275 steel mainly includes elements such as carbon (C), silicon (Si), manganese (Mn), phosphorus (P) and sulfur (S). Among these elements, the content of carbon is usually within a certain range, which helps improve its plasticity and toughness. At the same time, manganese element can improve the strength and hardness of steel, while silicon element can help improve the wear resistance and corrosion resistance of steel. In addition to the above main elements, Q275 may also contain small amounts of copper (Cu), chromium (Cr), nickel (Ni) and other alloying elements. These elements are mainly used to improve the corrosion resistance, wear resistance and strength of steel.
Specifically, the chemical composition of Q275 may meet the following general range: the content of carbon (C) is between 0.22%~0.25% or 0.28%~0.38%, the content of silicon (Si) usually does not exceed 0.35%, and the content of manganese (Mn ) content is between 0.50% and 0.80%, the content of phosphorus (P) does not exceed 0.045%, and the content of sulfur (S) is usually controlled below 0.050%.
Q275 steel is a carbon structural steel with a wide range of uses. The following are the main application areas of Q275 steel:
Construction bridge engineering: Q275 steel is mainly used to make key components in construction bridge projects. These components often need to withstand greater pressure and stress. Due to its high strength and good plasticity, Q275 steel can ensure that these components can maintain stability and safety in extreme environments.
Machinery manufacturing: In the field of machinery manufacturing, Q275 steel is often used to manufacture parts that require higher strength, such as gears, shafts, sprockets, keys, bolts, nuts, etc. Their excellent machinability and toughness make these parts easy to machine during manufacturing while maintaining excellent performance during use.
Agricultural machinery manufacturing: Q275 steel is also commonly used in the field of agricultural machinery manufacturing to produce various agricultural machinery steel sections and conveyor chains and other components. These parts need to withstand large working loads, and the strength and plasticity of Q275 steel ensure that they remain stable over long periods of use.
In addition to the above areas, Q275 steel can also be quenched and strengthened as needed to further improve its strength and hardness to meet the needs of more special application scenarios. In general, Q275 steel has become an indispensable and important material in many fields due to its excellent comprehensive mechanical properties and economical price.