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
Excellent weather-resistant steel Q355NH

The main chemical components of Q355NH steel include iron, carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), nickel (Ni), copper (Cu) and other elements . The specific chemical composition ratios are as follows:

Carbon (C) content: ≤0.16%
Silicon (Si) content: ≤0.50%
Manganese (Mn) content: 0.50%~1.50%
Phosphorus (P) content: ≤0.030%
Sulfur (S) content: ≤0.030%
Chromium (Cr) content: 0.40%~0.80%
Copper (Cu) content: 0.25%~0.55%
In addition, Q355NH steel may also contain other alloying elements, such as molybdenum (Mo), titanium (Ti), vanadium (V) and niobium (Nb). The contents of these elements are: Mo≤0.30%, Ti≤0.10%. , V≤0.12%, Nb≤0.06%.

The addition of these alloying elements can significantly improve the atmospheric corrosion resistance, strength and other mechanical properties of steel, allowing it to perform well in various environments. Therefore, Q355NH steel is widely used in fields such as building structural parts and bridge auxiliary structural parts that need to be exposed to the outdoors for a long time.

Q355NH steel has the characteristics of high strength, corrosion resistance, wear resistance, heat resistance, acid and alkali resistance, etc. It is an excellent weathering steel. Its yield and tensile strength are close to those of low alloy plates and its corrosion resistance is good, so it is widely used in many fields.

Construction field: Q355NH steel is often used to manufacture bridges, building structural parts, towers, etc. due to its high strength and good corrosion resistance. Especially in construction projects that require long-term exposure to outdoor environments, the weather resistance of Q355NH steel can ensure its long-term stability and safety.
Transportation field: Q355NH steel also plays an important role in the manufacturing of railway vehicles, containers, oil derricks, seaport buildings, etc. Their high strength and corrosion resistance allow these structures to maintain good performance under harsh environmental conditions.
Industrial field: Q355NH steel is also used to manufacture structural parts such as oil pipelines, containers containing hydrogen sulfide corrosive media in chemical and petroleum equipment, and various facilities in marine engineering. In these areas, its corrosion resistance can greatly extend the service life of equipment and reduce maintenance costs.
In addition, the excellent welding performance of Q355NH steel also gives it advantages in situations where welding connections are required. Whether it is bridges, buildings or other industrial facilities, Q355NH steel can provide reliable material guarantees.

To sum up, Q355NH steel is widely used in many fields due to its excellent performance. However, when using Q355NH steel, it also needs to be selected and designed according to specific engineering needs and environmental conditions to ensure maximum performance and safety.