AH36 marine steel plate is normal temperature steel, and DH36 marine steel plate is low temperature steel.
AH36 marine steel refers to the hot-rolled steel plates used for the manufacture of hull structures produced in accordance with the requirements of the classification society.
Due to the harsh working environment of the ship; the hull bears greater wind and wave impact and alternating loads; the shape of the ship makes its processing method complicated and other factors, so the requirements for AH36 marine steel are strict.
First of all, AH36 marine steel must have good toughness. In addition, AH36 marine steel is required to have high strength, good corrosion resistance, welding performance, processing and forming performance and surface quality. In order to ensure quality and ensure sufficient toughness, the AH36 marine steel plate chemical composition of Mn/C is required to be above 2.5 and produced by a steel plant approved by the ship inspection department.
According to its small yield point, structural steel for hull is divided into strength classes: general strength structural steel and high strength structural steel. There are two types of structural steel for hulls: general strength and high strength steel. General strength steel is divided into four grades of A, B, D and E according to quality; high strength steel is divided into two strength grades and three quality grades; AH32, DH32, EH32, AH36, DH36, EH36.
