EN10028-3 P355N is a pressure vessel steel grade that is widely used in the fabrication of pressure vessels and boilers due to its excellent mechanical properties and chemical composition. This grade is compliant with the European standard EN10028-3, which specifies requirements for flat products for pressure equipment made of weldable fine-grain steels.

Chemical Composition:

The chemical composition of P355N is carefully controlled to ensure the steel's suitability for pressure vessel applications. The typical chemical composition is as follows:

· Carbon (C): ≤ 0.18%

· Silicon (Si): ≤ 0.50%

· Manganese (Mn): ≤ 1.60%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.015%

· Aluminum (Al): ≥ 0.020%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.05%

Mechanical Properties:

The mechanical properties of P355N are characterized by its high strength and good toughness, which are essential for pressure vessel applications. The typical mechanical properties include:

· Yield Strength: ≥ 355 MPa

· Tensile Strength: 490 - 630 MPa

· Elongation: ≥ 22%

· Impact Energy (at -20°C): ≥ 40 Joules

Heat Treatment:

P355N steel plates are generally supplied in the normalized condition. Normalization is a heat treatment process that improves the mechanical properties of the steel by refining the grain size and homogenizing the microstructure.

Low-Temperature Impact Test:

The steel grade P355N is subjected to a low-temperature impact test to ensure its toughness at sub-zero temperatures. This is crucial for applications where the equipment may be exposed to low temperatures.

Available Dimensions:

TJC Steel Group offers P355N pressure vessel steel plates in a wide range of sizes to meet the diverse needs of our customers. The available dimensions typically include:

· Thickness: 6mm - 300mm

· Width: 1500mm - 4020mm

· Length: 3000mm - 18000mm

Main Applications:

The P355N steel grade is commonly used in the manufacturing of pressure vessels, boilers, heat exchangers, and storage tanks. Its excellent mechanical properties and resistance to pressure make it suitable for applications in the chemical, petrochemical, and power generation industries.

TJC Steel Group Supply Cases:

TJC Steel Group has supplied P355N steel plates to various industries worldwide. One notable supply case involved the fabrication of a large-scale boiler for a power plant in Southeast Asia. The project required high-quality steel plates with stringent specifications, and TJC successfully delivered the material on time, meeting all the client's requirements.

In another instance, TJC supplied P355N steel plates for the construction of a chemical processing facility in Europe. The material's superior toughness and weldability were key factors in the selection process, and TJC's ability to provide the exact dimensions needed for the project was highly appreciated by the client.

In conclusion, EN10028-3 P355N is a reliable choice for pressure vessel applications, offering a robust combination of chemical composition, mechanical properties, and performance. TJC Steel Group's extensive experience in supplying this grade ensures that customers receive high-quality steel plates that meet their specific project needs.