The
EN10225 S355G5+M steel plate is a thermomechanically rolled (TMCR) high-strength structural steel specifically designed for offshore engineering applications. Its uses are concentrated in marine and offshore engineering sectors that demand high strength, high toughness, and corrosion resistance.
Offshore Platforms and Wind Power Equipment
Offshore Wind Turbine Foundation Piles: These must withstand dynamic loads (e.g., wave impacts) and low-temperature environments. With a yield strength of ≥355 MPa, tensile strength of 470–630 MPa, and -40°C low-temperature impact toughness (impact energy ≥50 J), S355G5+M ensures structural stability under extreme conditions.
Drilling Platform Support Structures: Its high strength and lamellar tearing resistance (optional Z35 grade) make it suitable for thick-plate welded joints, preventing lamellar tearing risks under deep-sea high-pressure conditions.
Port and Dock Facilities
Heavy-Duty Crane Booms: These require a balance of high strength and ductility. The elongation rate of ≥22% for S355G5+M allows plastic deformation under stress without fracture.
Dock Load-Bearing Components: By refining grain structure through controlled rolling technology (TMCP), material toughness is enhanced to withstand dynamic loads such as tidal forces and vessel impacts.
Specialized Shipbuilding
Ice-Strengthened Structures for Polar Research Vessels: In -40°C low-temperature environments, S355G5+M maintains stable impact toughness, meeting polar navigation requirements.
Hull Structures and Equipment: Its low carbon equivalent design (C ≤ 0.12%) and low sulfur/phosphorus content (S ≤ 0.005%, P ≤ 0.015%) optimize weldability, reducing the risk of cold cracks in welds.
