The working environment of the ship is extremely harsh. The hull has to withstand the corrosion of seawater, marine organisms and microorganisms. The hull also has to withstand the impact of large waves and alternating loads. The shape of the ship makes its processing technology more complex, so the requirements for steel for hull structure are more stringent.
First of all, good toughness is the most critical point of shipbuilding steel plates. In addition, shipbuilding steel plates require high strength, good corrosion resistance, excellent welding performance, processing and forming performance and surface quality.
Of course, in order to ensure quality and ensure sufficient toughness, shipbuilding steel plates require chromium and manganese two metal elements to contain more than 2.5%, and there are also strict requirements on the content ratio of carbon metal elements.
