moreAbout us
Henan BEBON international co.,ltd located in zhengzhou ,henan province of china. Since it was established in 2008, Henan BEBON has earned an outstanding reputation for its professional exporting shipbuilding steel.About the products,we mainly specialized in steel products for shipbuilding which have been approved by some authoritative classification societies,likeLR,BV,ABS,DNV,GL and so on . Besides, we have three big warehouses--Zhengzhou,Tianjin and shanghai.
BEBON STEEL > News News
Q390D steel

Q390D steel is a low-alloy high-strength structural steel mainly used in various engineering structures and manufacturing fields. The chemical composition of Q390D steel includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), niobium (Nb), vanadium (V), titanium (Ti) and other elements. The reasonable ratio of these elements can improve the strength and hardness of steel. Q390D steel has high yield strength and tensile strength. The yield strength is generally above 390MPa, and the tensile strength is generally between 470~630MPa. In addition, it has good elongation and hot and cold processing properties, and is suitable for various processing techniques.Q390D steel has good welding performance and can be connected by conventional welding methods, such as manual arc welding, gas shielded welding and resistance welding. The welded joint has good strength and toughness, which is beneficial to the stability and safety of the structure. Q390D steel has certain wear resistance and is suitable for manufacturing some parts and equipment that require wear resistance, such as bucket teeth of excavators and blades of bulldozers. Q390D steel is mainly used in building structures, bridge engineering, automobile manufacturing, shipbuilding, machinery manufacturing, oil and gas and other fields. In the field of construction, it is often used to manufacture beams, columns, plates and welded structures; in bridge engineering, it is often used to manufacture structural components of bridges; in automobile manufacturing, it is often used to manufacture body structures and Chassis parts, etc.

The emergence of Q390D steel is to meet the needs of engineering construction and manufacturing for high-strength structural steel. In the past few decades, with the development of engineering construction and manufacturing, the requirements for structural strength and quality have become higher and higher, and traditional carbon structural steel can no longer meet the demand. Therefore, low-alloy high-strength structural steels were introduced and gradually became an important material category.

The tensile strength of Q390D steel is generally above 390MPa. Compared with ordinary carbon structural steel, it has higher strength and can withstand larger loads and stresses. Although Q390D steel has high strength, it still has good plasticity and can plastically deform when stressed without breaking easily. This makes it suitable for a variety of shapes and processing needs. Q390D steel has good welding performance and can be connected by conventional welding methods, such as manual arc welding, gas shielded welding and resistance welding. The welded joint has good strength and toughness. Although Q390D steel generally has good corrosion resistance, corrosion may occur in humid, acidic or alkaline environments. Therefore, in applications exposed to corrosive environments, additional protective measures may be required. Q390D steel has good hot and cold processing properties and can meet the needs of various processing techniques, such as cold bending, hot rolling, forging, etc. Q390D steel is suitable for various engineering and manufacturing fields, including building structures, bridge engineering, automobile manufacturing, shipbuilding, machinery manufacturing, etc. Its high strength and good plasticity allow it to meet a variety of complex engineering projects and manufacturing needs.

Q390D steel is often used in various components of building structures, such as beams, columns, beams and floor slabs. Its high strength and good plasticity allow it to withstand large loads and external vibrations, and it also has good seismic resistance. It is widely used in construction projects such as high-rise buildings, large bridges and industrial plants. In bridge construction, Q390D steel is often used to manufacture bridge structural components, such as bridge beam plates, bridge piers, and bridge decks. Its high strength and good plasticity can ensure the stability and safety of bridge structures and is widely used in bridge projects such as highways, railways and urban roads. Q390D steel also has important applications in the field of automobile manufacturing, and is often used to manufacture automobile body structures and chassis components. Its high strength and good plasticity can improve the structural strength and safety of automobiles, and is widely used in automobile types such as cars, trucks, and engineering vehicles. Q390D steel is often used in ship construction to manufacture hull structures and ship equipment. Its high strength and good weather resistance can ensure the safety of ships in harsh sea conditions, and it is widely used in the fields of marine engineering and shipbuilding.In the field of machinery manufacturing, Q390D steel is often used to manufacture machinery equipment and parts, such as excavators, bulldozers, loaders, etc. Its high strength and excellent plasticity can improve the service life and work efficiency of mechanical equipment, and is widely used in fields such as engineering machinery and agricultural machinery.

To sum up, Q390D steel has important applications in the fields of building structures, bridge engineering, automobile manufacturing, shipbuilding, and machinery manufacturing, providing reliable structural materials for various engineering and manufacturing projects.