The concept of S355J0W

S355J0W is a low-alloy high-strength structural steel, which belongs to the weathering steel under the European standard (EN 10025-5:2004), also known as atmospheric corrosion resistant steel. This kind of steel adds a small amount of corrosion resistant elements such as copper and nickel on the basis of ordinary steel to improve its corrosion resistance in atmospheric environment.

Features of S355J0W

Excellent weather and corrosion resistance: S355J0W steel can maintain long-term stable performance in outdoor environments without additional coating or anti-corrosion treatment, greatly reducing maintenance costs. Its atmospheric corrosion resistance is 2 to 8 times that of ordinary carbon steel.

High strength: The steel has a high yield strength and tensile strength, can meet a variety of complex engineering needs.

Good weldability and machinability: S355J0W steel can be easily cut, bent, welded and other processing operations during the manufacturing process, providing engineers and manufacturers with greater design freedom.

Good impact toughness: under 0 degree impact test, the impact work of S355J0W steel should be greater than or equal to 31J, showing good impact toughness and able to withstand large impact loads.

Rust resistance, thinning, consumption reduction, labor and energy saving: Due to the weather resistance and strength of S355J0W steel, the use of steel can be reduced, the project cost can be reduced, and the effect of energy saving can be achieved.

Chemical composition of S355J0W

The chemical composition of S355J0W steel plate mainly includes carbon C, silicon Si, manganese Mn, phosphorus P, sulfur S, chromium Cr, nickel Ni, copper Cu, molybdenum Mo and other elements. Among them, the specific chemical composition content range is as follows:

Carbon C: Should be less than or equal to 0.16%

Silicon Si: should be less than or equal to 0.5%

Manganese Mn: Should be 0.5~1.5%

P: Should be less than or equal to 0.010%

Sulfur S: should be less than or equal to 0.010%

In addition, it also includes other alloying elements such as chromium Cr, nickel Ni, copper Cu and molybdenum Mo, etc., the addition of these elements improves the corrosion resistance and other mechanical properties of steel.

Application scope of S355J0W

Due to its excellent performance, S355J0W steel has been widely used in many fields, mainly including:

Bridge construction: In bridge construction, S355J0W steel can withstand harsh climatic conditions and heavy load traffic pressure, to ensure the safety and durability of the bridge.

Construction field: In the construction field, S355J0W steel is often used to manufacture external walls, roofs, doors and Windows and other components, improve the wind resistance and earthquake resistance of the building, and give the building a unique modern beauty.

Vehicle and ship manufacturing: In the field of vehicles, S355J0W steel is often used to manufacture key components such as body frames and chassis; In the field of ships, it is used to manufacture hull, deck and other components, which enhances the corrosion resistance and durability of the ship.

Other fields: In addition, S355J0W steel is also widely used in towers, photovoltaic, high-speed engineering and other long-term exposure to the atmosphere of the use of steel structures, as well as manufacturing containers, oil RIGS, harbor buildings, oil platforms and chemical petroleum equipment containing hydrogen sulfide corrosion media containers and other structural parts.