EN10028-6 P690QL2 is a pressure vessel steel grade with exceptional strength and toughness, particularly designed for applications at low temperatures. This grade is widely recognized for its superior performance in critical environments and is a preferred choice for the manufacturing of pressure equipment that requires high levels of safety and reliability.

Chemical Composition:

The chemical composition of EN10028-6 P690QL2 is tightly controlled to ensure the necessary mechanical properties and weldability. The typical chemical composition includes:

· Carbon (C): ≤ 0.18%

· Silicon (Si): ≤ 0.60%

· Manganese (Mn): ≤ 1.50%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.015%

· Nickel (Ni): ≤ 1.50%

· Chromium (Cr): ≤ 0.30%

· Molybdenum (Mo): ≤ 0.10%

· Copper (Cu): ≤ 0.30%

· Niobium (Nb): ≤ 0.05%

· Titanium (Ti): ≤ 0.03%

· Vanadium (V): ≤ 0.05%

· Boron (B): ≤ 0.005%

Mechanical Properties:

The mechanical properties of P690QL2 are impressive, with the following characteristics:

· Yield Strength: ≥ 690 MPa

· Tensile Strength: 770 - 940 MPa

· Elongation: ≥ 14%

· Impact Energy (at -40°C): ≥ 40J

Heat Treatment:

P690QL2 is generally supplied in the quenched and tempered condition. This heat treatment process ensures that the steel has a fine-grained microstructure, which contributes to its excellent strength and toughness properties.

Low-Temperature Impact Test:

The grade is subjected to a Charpy V-notch impact test at -40°C to ensure that it maintains its toughness at low temperatures. This is a critical requirement for materials used in cryogenic applications.

Available Dimensions:

TJC Steel Group offers P690QL2 in a wide range of sizes to cater to various project requirements. The typical available dimensions are:

· Thickness: 6mm to 300mm

· Width: 1500mm to 4020mm

· Length: 3000mm to 18000mm

Main Applications:

P690QL2 is used in the fabrication of pressure vessels, boilers, and other equipment that operates under severe conditions, especially in the oil, gas, chemical, and petrochemical industries. It is also suitable for applications requiring high resistance to brittle fracture, such as liquefied natural gas (LNG) tankers and storage facilities.

TJC Steel Group Supply Cases:

TJC Steel Group has a proven track record of supplying high-quality P690QL2 steel plates to various industries worldwide. One notable supply case involved the delivery of P690QL2 plates for the construction of a high-pressure reactor vessel in a chemical plant. The plates were supplied in thicknesses up to 150mm, meeting the stringent requirements of the project.

Another case saw TJC Steel Group providing P690QL2 steel for the construction of a liquefied petroleum gas (LPG) storage tank. The material's excellent low-temperature toughness was crucial for ensuring the safety and reliability of the storage facility.

In conclusion, EN10028-6 P690QL2 is a high-performance pressure vessel steel that offers superior strength, toughness, and reliability, making it suitable for critical applications in harsh environments. TJC Steel Group's extensive experience in supplying this grade ensures that clients receive materials that meet the highest standards of quality and performance.