The chemical composition of P355GH steel plate is mainly composed of a variety of elements. The following are its main elements and their approximate content range:
Carbon (C): content between 0.10% and 0.22%. The right amount of carbon content can improve the cutting performance and hardening ability of steel while maintaining good weldability.
Silicon (Si): content should be controlled below 0.60%. Silicon increases the strength and hardness of steel, while also helping to improve its resistance to heat and corrosion.
Manganese (Mn): content between 1.10% and 1.70%.
Phosphorus (P): The content should be controlled below 0.025%.
Sulfur (S): content should be controlled below 0.010%.
In addition, P355GH steel plate also contains other elements, such as nitrogen (N), chromium (Cr), copper (Cu), molybdenum (Mo), niobium (Nb), nickel (Ni), titanium (Ti) and vanadium (V ), their content also has strict limits, for example:
N content should be controlled below 0.012%.
The upper limits of Cr, Cu, Mo, Nb, Ni, Ti and V are 0.30%, 0.30%, 0.08%, 0.040%, 0.30%, 0.03% and 0.02% respectively.
The presence and content control of these elements help improve the corrosion resistance, high temperature resistance and other mechanical properties of the steel plate.
P355GH steel plate is a medium-high strength low alloy steel plate with excellent mechanical properties and corrosion resistance, so it is widely used in many industries. Here are some of the main application areas:
Construction industry: P355GH steel plates play an important role in the construction field. It can be used to manufacture structural parts and supporting parts of high-rise buildings to ensure the stability and safety of the building. At the same time, it can also be used in bridge construction to manufacture key structural parts such as main beams and piers, which can withstand huge pressure and weight.
Mechanical manufacturing field: In the mechanical field, P355GH steel plates are often used to manufacture various high-strength parts. These parts need to have excellent wear resistance, impact resistance and corrosion resistance to cope with complex working environments and high-intensity work requirements.
Petrochemical industry: P355GH steel plate also plays a key role in the petrochemical industry. It can be used to manufacture corrosion-resistant equipment such as oil tanks and pipelines to ensure that the equipment can operate stably in harsh chemical environments and improve production efficiency.
Electric power field: In the electric power industry, P355GH steel plates are widely used to make the shells of electrical equipment such as transformers and reactors. These devices need to withstand high voltages and temperatures, requiring materials with excellent electrical properties and thermal stability.
Pressure vessel manufacturing: P355GH steel plate is also a commonly used steel plate for high-temperature pressure vessels. It is often used to manufacture various pressure vessels, such as boilers, storage tanks, and furnaces. It can meet the high requirements for material performance of pressure vessels in high temperature and high pressure environments.
To sum up, P355GH steel plate plays an important role in many industries such as construction, machinery, petrochemical industry, electric power and pressure vessel manufacturing due to its excellent performance and wide range of applications.