EN 10028-3 P355NH Boiler And Pressure Vessel Steel Plate

EN10028-3 P355NH Boiler And Pressure Vessel Steel Plate is a high-strength, non-alloy or low-alloy steel plate designed for high-temperature and high-pressure applications, particularly for pressure equipment such as boilers and pressure vessels. It offers excellent mechanical properties and high-temperature stability.

Key Features and Advantages：

1. High-Temperature Stability: Optimized composition (e.g., Ni, Cr) and normalized treatment ensure stable mechanical properties at ≤400°C, preventing strength loss due to thermal softening.

2. Excellent Weldability: Low carbon equivalent (CEV ≤0.45%) minimizes hardening during welding, often eliminating the need for preheating (or requiring only low-temperature preheating, depending on thickness). Post-weld toughness remains high.

3. Fatigue and Corrosion Resistance: Fine-grained structure (Al deoxidation) improves fatigue resistance; low sulfur and phosphorus content reduces erosion from steam or flue gas.

4. Process Adaptability: Suitable for cold working (cutting, bending, stamping) and welding, enabling complex pressure vessel designs.

EN10028-3 P355NH Boiler And Pressure Vessel Steel Plate is a cost-effective steel grade for high-temperature pressure applications. Through strict composition control, normalized treatment, and performance testing, it meets the safety requirements of boilers, pressure vessels, and similar equipment under extreme conditions. Its design balances strength, toughness, weldability, and high-temperature stability, making it a mainstream choice in the European and global pressure equipment industry for energy, chemical, and power sectors.

The chemical composition of P355NH is strictly controlled to ensure mechanical properties and weldability.

EN10028-3 P355NH Boiler And Pressure Vessel Steel Plate is widely used in high-temperature and high-pressure environments, including:

1. Power plant boilers (e.g., steam drums, water walls).

2. Chemical pressure vessels (e.g., reactors, storage tanks, heat exchangers).

3. Oil and gas equipment (e.g., high-pressure pipelines, separators).

4. Nuclear power auxiliary systems (e.g., cooling system pressure vessels).