EN10028-2 20MnMoNi4-5 is a pressure vessel steel grade with excellent mechanical properties and weldability, widely used in the fabrication of boilers and pressure vessels. This grade is designed to withstand high pressure and temperature environments, making it a reliable choice for critical applications in the energy and petrochemical industries.

Chemical Composition:

The chemical composition of 20MnMoNi4-5 is strictly controlled to ensure the material's mechanical properties and weldability. The typical chemical composition is as follows:

· Carbon (C): 0.17 - 0.23%

· Silicon (Si): ≤ 0.15 - 0.40%

· Manganese (Mn): 1.10 - 1.50%

· Phosphorus (P): ≤ 0.025%

· Sulfur (S): ≤ 0.020%

· Nickel (Ni): 0.70 - 1.10%

· Molybdenum (Mo): 0.45 - 0.65%

· Chromium (Cr): ≤ 0.30%

· Copper (Cu): ≤ 0.30%

· Aluminum (Al): ≤ 0.020%

· Nitrogen (N): ≤ 0.012%

Mechanical Properties:

The mechanical properties of 20MnMoNi4-5 are characterized by its high strength and toughness. The typical values are as follows:

· Yield Strength: ≥ 355 MPa

· Tensile Strength: 550 - 690 MPa

· Elongation: ≥ 19%

· Impact Energy (at -30°C): ≥ 40J

Heat Treatment:

The steel plates are supplied in a normalized and tempered condition to achieve the desired mechanical properties. This heat treatment process ensures that the material has a uniform microstructure and optimal mechanical characteristics.

Available Dimensions:

TJC Steel Group offers 20MnMoNi4-5 steel plates in a wide range of sizes to meet various project requirements. The typical available dimensions are:

· Thickness: 6mm - 300mm

· Width: 1500mm - 4020mm

· Length: 3000mm - 18000mm

Low-Temperature Impact Test:

20MnMoNi4-5 steel plates are subjected to a low-temperature impact test at -30°C to ensure their suitability for use in low-temperature environments. The material must meet the specified impact energy requirements to pass the test.

Main Applications:

The excellent properties of 20MnMoNi4-5 make it suitable for a variety of applications, including:

· Pressure vessels

· Steam boilers

· Nuclear reactor components

· Petrochemical equipment

· High-pressure storage tanks

TJC Steel Group Supply Cases:

TJC Steel Group has a proven track record of supplying high-quality 20MnMoNi4-5 steel plates to various industries. One notable supply case involved the delivery of 120 tons of 20MnMoNi4-5 plates for a petrochemical project in Southeast Asia. The material was used to fabricate pressure vessels that required exceptional toughness and strength at elevated temperatures.

Conclusion:

EN10028-2 20MnMoNi4-5 is a versatile and robust steel grade that is essential for the construction of high-performance boilers and pressure vessels. TJC Steel Group's commitment to quality and customer satisfaction ensures that clients receive the highest standard of 20MnMoNi4-5 steel plates for their critical applications.