EN10028-3 P355NH is a pressure vessel steel grade with excellent mechanical properties and chemical composition, specifically designed for use in low temperature applications. This grade is widely recognized for its reliability and durability, making it a preferred choice for the manufacturing of pressure vessels and boilers. Below is a detailed introduction to the chemical composition, mechanical properties, heat treatment conditions, low-temperature impact testing, available size range, primary applications, and relevant supply cases from TJC Steel Group.

Chemical Composition:

EN10028-3 P355NH steel plate is characterized by a well-balanced chemical composition that ensures high strength and good weldability. The typical chemical composition is as follows:

· Carbon (C): ≤ 0.16%

· 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%

· Nickel (Ni): ≤ 0.50%

· Chromium (Cr): ≤ 0.30%

· Molybdenum (Mo): ≤ 0.08%

· Copper (Cu): ≤ 0.30%

Mechanical Properties:

The mechanical properties of P355NH are crucial for its application in pressure vessels. The following are the typical mechanical properties:

· Yield Strength: ≥ 355 MPa

· Tensile Strength: 490 - 630 MPa

· Elongation: ≥ 22%

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

Heat Treatment Conditions:

P355NH steel plates are generally supplied in the normalized condition. Normalizing is a heat treatment process that improves the mechanical properties of the steel, especially its toughness and ductility. The steel is heated to a temperature above its upper critical point and then cooled in air.

Low-Temperature Impact Test:

The low-temperature impact test is a critical requirement for materials used in pressure vessels operating at low temperatures. P355NH steel plates are subjected to impact testing at -20°C, ensuring that the material maintains its toughness and impact resistance at low temperatures.

Available Size Range:

TJC Steel Group offers EN10028-3 P355NH steel plates in a wide range of sizes to meet various project requirements. The typical size range includes:

· Thickness: 6mm - 300mm

· Width: 1500mm - 4020mm

· Length: 3000mm - 18000mm

Primary Applications:

The excellent properties of P355NH make it suitable for a wide range of applications, including:

· Pressure Vessels

· Boilers

· Heat Exchangers

· Storage Tanks

· Columns and Towers

· Reactors

TJC Steel Group Supply Cases:

TJC Steel Group has a proven track record of supplying high-quality P355NH steel plates to various industries worldwide. One notable supply case involved the delivery of P355NH plates for a chemical processing plant in Europe. The plates were used to construct pressure vessels that required high strength and excellent toughness at low temperatures. TJC's ability to provide the material in large quantities and within a tight schedule was crucial to the project's success.

In conclusion, EN10028-3 P355NH is a versatile and reliable steel grade for pressure vessel applications, especially in low-temperature environments. TJC Steel Group's commitment to quality and customer satisfaction makes it a trusted supplier of P355NH steel plates for critical applications across the globe.