EN10028-5 P420M is a weldable fine-grain thermomechanically rolled steel for pressure vessels under European standards, with its core applications centered on high-pressure equipment manufacturing.
1. Petrochemical Industry
Reactors, Heat Exchangers, Separators: The high strength and excellent weldability of P420M steel make it suitable for manufacturing chemical equipment subjected to high temperatures and pressures, ensuring stability under corrosive media and extreme operating conditions.
Spherical Tanks, Oil/Gas Storage Tanks, LPG Tanks: Its low-temperature toughness and hydrogen-induced cracking resistance enable safe storage of cryogenic media such as liquefied petroleum gas (LPG) and natural gas, reducing the risk of brittle fracture.
2. Power and Energy Sector
Nuclear Reactor Pressure Vessels: P420M steel ensures long-term safety in radiation environments through stringent chemical composition requirements and intergranular corrosion testing specified in EN10028 standards.
Boiler Drums, High-Pressure Pipes in Hydropower Plants: Its normalized or quenched-and-tempered delivery condition optimizes the balance between strength and toughness, adapting to high-temperature steam environments and minimizing equipment fatigue failure.
3. Machinery Manufacturing and Heavy Equipment
Hydraulic Turbine Scroll Cases, Turbine Casings: The fine-grained structure of P420M steel enhances fatigue resistance, making it ideal for heavy machinery components subjected to dynamic loads.
Pressure Vessels and Piping Systems: In refining, fertilizer production, and similar applications, P420M steel is used for high-pressure pipelines and storage tanks, meeting dimensional tolerances and mechanical property requirements under international standards like ASME.
4. Cryogenic Engineering Applications
Liquefied Natural Gas (LNG) Storage and Transportation Equipment: Low-temperature variants of the P420M series incorporate microalloying elements such as Nb and Ti to refine grain structure and improve low-temperature toughness, enabling operation in extreme cold environments .
Oil and Gas Exploitation Equipment in Arctic Regions: Its low-temperature impact toughness and lamellar tearing resistance ensure structural integrity under sub-zero conditions.
