RINA grade E marine steel sheet refers to the steel used to manufacture the hull structure of marine and inland ships. It is usually high-quality carbon steel and high-quality low-alloy steel. RINA grade E marine steel sheet requires certain strength, toughness, low temperature resistance and corrosion resistance, and RINA grade E marine steel sheet has good welding performance.
The general strength of RINA grade E marine steel sheet is divided into four grades: A, B, D and E. the yield strength (not less than 235N/mm^2) and tensile strength (400-520N/mm^2) of these four grades of RINA grade E marine steel sheet are the same, but the impact energy at different temperatures is not the same.
Due to the harsh working environment of the ship, the hull shell is subject to chemical corrosion, electrochemical corrosion, marine biological and microbial corrosion; the hull is subject to large wind wave impact and alternating load; the ship shape makes its processing method complex, so the requirements for RINA grade E marine steel sheet are strict. First of all, good toughness is the most critical requirement. In addition, RINA grade E marine steel sheet is required to have high strength, good corrosion resistance, welding performance, processing formability and surface quality.
