EN10028-3 P355NL2 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 designed to operate at low temperatures and is thus subjected to stringent quality control measures to ensure its reliability and safety.

Chemical Composition:

The chemical composition of P355NL2 is carefully balanced to provide the necessary strength and toughness for pressure vessel applications. The typical chemical composition includes:

· Carbon (C): ≤ 0.18%

· Silicon (Si): ≤ 0.50%

· Manganese (Mn): ≤ 1.50%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.015%

· Aluminum (Al): ≥ 0.020%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.05%

· Nickel (Ni): ≤ 0.50%

· Chromium (Cr): ≤ 0.30%

· Molybdenum (Mo): ≤ 0.08%

· Copper (Cu): ≤ 0.30%

Mechanical Properties:

The mechanical properties of P355NL2 are characterized by its high strength and good ductility, which are essential for pressure vessel applications. The typical mechanical properties are as follows:

· Yield Strength: ≥ 355 MPa

· Tensile Strength: 490 - 630 MPa

· Elongation: ≥ 22%

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

Heat Treatment:

P355NL2 is generally supplied in a normalized condition. Normalization is a heat treatment process that involves heating the steel to a temperature above its upper critical point and then cooling it in air. This process refines the grain structure and improves the mechanical properties of the steel.

Low-Temperature Impact Test:

P355NL2 is subjected to a low-temperature impact test to ensure its toughness at sub-zero temperatures. The material must meet the specified impact energy requirements at -40°C to be certified for use in low-temperature applications.

Available Dimensions:

TJC Steel Group offers P355NL2 pressure vessel steel plates in a wide range of sizes to meet the diverse needs of our customers. The available dimensions include:

· Thickness: 6mm - 300mm

· Width: 1500mm - 4020mm

· Length: 3000mm - 18000mm

Main Applications:

P355NL2 is commonly used in the fabrication of pressure vessels, boilers, and other equipment that operates under high pressure and at low temperatures. Some of the typical applications include:

· Chemical reactors

· Nuclear reactors

· Steam boilers

· Heat exchangers

· Pressure vessels for oil and gas industries

TJC Steel Group Supply Cases:

TJC Steel Group has a proven track record of supplying high-quality P355NL2 pressure vessel steel plates to various industries worldwide. One notable supply case involved the delivery of 500 tons of P355NL2 plates to a major oil refinery in the Middle East. The plates were used in the construction of high-pressure reactors, where their excellent mechanical properties and resistance to low-temperature impact were crucial.

In another instance, TJC Steel Group supplied 300 tons of P355NL2 steel plates to a European power plant. The plates were utilized in the construction of a new steam boiler, where their superior strength and toughness ensured the safety and efficiency of the boiler.

In conclusion, EN10028-3 P355NL2 is a versatile and reliable pressure vessel steel grade that is well-suited for applications involving high pressure and low temperatures. TJC Steel Group's commitment to quality and customer satisfaction makes it a trusted supplier of P355NL2 steel plates to industries around the globe.