Strength requirements for Shipbuilding marine steel. The higher strength can reduce the weight of the hull, reduce the welding work, and increase the carrying capacity. The use of high strength steels is also restricted by the rigidity and corrosion resistance of the hull.
Hull alignment is more complex, there are many types of single curve or hyperboloid, need to adopt cold, hot bending and correction and other forming operations, the requirements of steel adaptability to shipbuilding technology, including welding and repair.
The plasticity and toughness of Shipbuilding Marine Steel are required to compensate for work hardening and thermal cycling due to various operations during construction.
For the important parts such as the stem, the most longitudinal bending stress of the hull, the bottom of the ship and the crack stop plate on the side, high crack resistance is required, and a low duct-brittle transition temperature and enough impact absorption work are required under low temperature conditions. Shipbuilding Marine Steel is resistant to sea water.
