EN10028-6 P355QL2 is a pressure vessel steel grade that is widely recognized for its exceptional properties and applications in the manufacturing of pressure equipment. This grade is part of the European standard for flat products made of steels for pressure purposes, and it is particularly suited for use in low temperature environments due to its superior toughness and strength.

Chemical Composition:

The chemical composition of EN10028-6 P355QL2 is carefully controlled to ensure that the steel possesses the necessary mechanical properties and weldability. The typical chemical composition includes:

· Carbon (C): ≤ 0.18%

· Silicon (Si): ≤ 0.50%

· Manganese (Mn): ≤ 1.60%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.015%

· Nickel (Ni): ≤ 0.80%

· Chromium (Cr): ≤ 0.30%

· Molybdenum (Mo): ≤ 0.10%

· Copper (Cu): ≤ 0.30%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.05%

Mechanical Properties:

The mechanical properties of P355QL2 are characterized by its high strength and excellent toughness, which are crucial for pressure vessel applications. The typical mechanical properties are as follows:

· Yield Strength: ≥ 355 MPa

· Tensile Strength: 480 - 620 MPa

· Elongation: ≥ 19%

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

Heat Treatment:

P355QL2 is generally supplied in a normalized and tempered condition. This heat treatment process ensures that the steel has a uniform microstructure and optimal mechanical properties. The normalization process involves heating the steel to a temperature above its critical point and then cooling it in air. Tempering is then carried out at a lower temperature to relieve stresses and improve toughness.

Low-Temperature Impact Test:

The steel grade is subjected to a low-temperature impact test to ensure that it maintains its toughness at sub-zero temperatures. This is particularly important for applications where the equipment may be exposed to cold environments. The impact test is conducted at -40°C, and the material must meet the specified impact energy requirements.

Available Dimensions:

TJC Steel Group offers EN10028-6 P355QL2 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 P355QL2 grade is commonly used in the fabrication of pressure vessels, boilers, and heat exchangers. Its excellent low-temperature toughness makes it suitable for applications in the petrochemical, chemical, oil and gas, and power generation industries. The steel is also used in the construction of storage tanks and other equipment that require high levels of strength and resistance to brittle fracture.

TJC Steel Group Supply Cases:

TJC Steel Group has a proven track record of supplying high-quality P355QL2 steel plates to various industries worldwide. One notable supply case involved the delivery of heavy-thickness P355QL2 plates for a major petrochemical project in the Middle East. The plates were used to construct high-pressure reactors that required exceptional strength and resistance to harsh operating conditions.

In another instance, TJC supplied P355QL2 steel to a European power plant for the construction of a new boiler. The steel's superior toughness at low temperatures was critical for ensuring the safety and reliability of the boiler under varying load conditions.

In conclusion, EN10028-6 P355QL2 is a versatile and reliable pressure vessel steel grade that is well-suited for applications requiring high strength and excellent toughness at low temperatures. TJC Steel Group's commitment to quality and customer satisfaction ensures that we can meet the most demanding specifications and deliver the materials needed for critical applications around the world.