Due to the harsh working environment of the ship, the hull shell is subject to chemical corrosion, electrochemical corrosion of seawater and corrosion of marine organisms and microorganisms; the hull is subjected to large wind and wave shocks and alternating loads; The steel requirements for hull structure are strict. First of all, good toughness is the most critical requirement. In addition, high strength, good corrosion resistance, welding performance, processability and surface quality are required. In order to maintain the quality and ensure sufficient toughness, the Mn/C of the chemical composition is required to be above 2.5, and the carbon equivalent is also strictly required, and it is produced by a steel mill approved by the ship inspection department.
http://www.huamaosteel.com