Deep analysis of S355J0WP steel

Chemical composition of S355J0WP steel

Main composition: Based on iron (Fe), carbon (C) content is relatively low, usually not more than 0.12%, which helps to ensure good toughness and weldability of steel. Manganese (Mn) is an important alloying element, the content is about 1.0-1.5%, it can refine the grain, enhance the strength and toughness of steel.

Weather resistant alloy elements: containing chromium (Cr), nickel (Ni) and copper (Cu) and other alloying elements. The chromium content helps to form a stable oxide film on the steel surface, which enhances corrosion resistance; Nickel can improve the toughness of steel, especially in low temperature environment. Copper can promote the steel to form a self-protective rust layer in the atmospheric environment, which can effectively resist the erosion factors such as moisture and oxygen in the atmosphere, and is one of the key factors for the excellent weather resistance of steel. At the same time, the content of impurity elements such as phosphorus (P) and sulfur (S) is strictly controlled at a low level to avoid adverse effects on steel properties.

S355J0WP steel properties

High strength performance: the yield strength is at least 355MPa, and the tensile strength is generally between 470 and 630MPa. This high strength makes it able to withstand large static and dynamic loads, and can be used as the main bearing material in the field of building structure, machinery manufacturing, etc., to provide stable support for the structure and ensure that the structure will not easily deform or damage during use.

Excellent weather resistance: Excellent performance in weather resistance. In the outdoor exposed environment, the special rust layer formed on the surface can effectively prevent further corrosion of steel, and can adapt to various atmospheric environments, including harsh corrosion environments such as industrial pollution areas and coastal areas. Compared with ordinary steel, it can greatly extend the service life, reduce maintenance costs, and is an ideal material for long-term outdoor structures.

Good toughness: Good impact toughness, especially at low temperatures. For example, in engineering applications in cold regions, even at lower temperatures, steel can maintain enough toughness to prevent brittle fractures, thus ensuring the safety of engineering structures.

S355J0WP steel processing properties

Good welding performance: In the welding process, through the appropriate selection of welding process parameters, such as appropriate welding current, voltage and welding speed, as well as the selection of matching welding materials, high quality welding can be achieved. The strength of the weld can be close to or reach the strength of the base material, and the weather resistance of the weld area can also be better guaranteed, which is very beneficial for the manufacture and installation of large steel structures.

Cold processing adaptability: It has certain cold processing properties, such as cold bending, cold rolling and so on. In the cold processing process, steel can be processed into various shapes of components to meet the requirements of different engineering designs. Moreover, under the reasonable cold working process, the internal structure of the steel will not be seriously damaged, and its mechanical properties and weather resistance can basically remain stable.

S355J0WP Steel application field

Construction industry: widely used in building facade, roof structure and other aspects. For example, in modern commercial buildings, sports venues and other large buildings, the use of S355J0WP steel made of outer wall panels and roof panels, can not only meet the strength requirements of the building structure, but also rely on its weather resistance to reduce frequent maintenance work, but also show a unique building appearance.

Bridge engineering: It is a high-quality material for bridge construction, which can be used for the main structure of Bridges, such as steel beams, bridge panels and other parts. It can withstand the dynamic load of the vehicle, resist wind and rain erosion and water erosion, reduce the maintenance cost of the bridge during use, and extend the service life of the bridge.

Transportation facilities: Some outdoor facilities in the field of transportation, such as bus stops, highway guardrails, etc., are also applied. These facilities are exposed to the outdoor environment for a long time, and the weather resistance of S355J0WP steel ensures that they remain in good condition for a longer period of time, reducing the frequency of maintenance and replacement.