The main components of Q690D steel plate are iron, carbon, silicon, manganese, phosphorus, sulfur and other elements. Among them, the carbon content is high, about 0.12%-0.20%, which makes Q690D have high strength and hardness. In addition, Q690D also contains a certain amount of alloying elements, such as silicon and manganese, which can further enhance the strength and toughness of the steel plate.
Q690D steel plate has high strength and hardness, its tensile strength and yield strength can reach more than 1000MPa and 800MPa respectively. At the same time, Q690D also has good toughness and ductility, and its elongation and impact toughness are high. These excellent mechanical properties enable Q690D to meet a variety of complex and demanding applications.
Q690D steel plate has a density of about 7.85g/cm³ and a low thermal conductivity of about 15W/(m-K). These physical properties enable Q690D to maintain good dimensional stability and creep resistance at high temperatures. In addition, Q690D has good electromagnetic properties and hot working properties.
Q690D steel plate has good weldability and can be connected by various welding methods. For example, common welding methods include electric arc welding, gas shielded welding, laser welding, etc.
