Alloy Structure Steel Hot Rolled Thick Steel Plate (GB/T11251-1989)
Alloy structure steel hot rolled thick steel plate (GB/T11251-1989) is a grade of ordinary steel containing carbon, silicon and manganese as the main elements. It is mainly used in construction and engineering structures, and can also be used to manufacture steel components for other engineering structures.
Hot rolling is a kind of manufacturing process of steel, which is a continuous forming technology. Hot rolled steel is produced according to the shape of the section by using a circulating rolling mill, and then cooling and annealing processes are processed to get the finished product. Hot rolling can reduce the energy consumption and improve the mechanical properties of steel, so the average price is lower than other processes.
Alloy structure steel hot rolled thick steel plate (GB/T11251-1989) has the characteristics of good performance, high wear resistance, superior mechanical properties and good surface appearance. It is widely used in ordinary construction projects. It is used for the manufacture of bridges, ships, tanks, vessels and other large-scale engineering structures. In addition, it can also be used for the manufacture of container parts of boilers, ships and other large-scale structures.
The GB/T11251-1989 standard hot rolled thick plates made of alloy structure steel have a certain surface quality and a good performance in mechanical properties. The surface quality includes the surface quality of hot rolled board, the straightness, the shape/cross sectional height, the surface tolerance/convexity, crease, fold, scratch, bending, etc. The mechanical properties mainly include yield strength, tensile strength, elongation rate and impact toughness. The table below shows the mechanical parameters.
For alloy structure steel hot rolled thick steel plates (GB/T11251-1989), the comprehensive mechanical properties, chemical composition and surface quality must meet the requirements of related standards. During the production process, the steel must go through the seasoning process, which can improve the mechanical properties. In the production, the number of times the steel is heated and cooled must be managed, and the temperature should be strictly controlled.
In conclusion, alloy structure steel hot rolled thick steel plate (GB/T11251-1989) has good performance and high wear resistance, which is widely used in ordinary construction projects and can also be used to manufacture large-scale engineering structures such as bridges, ships, tanks, vessels and boilers. GB/T11251-1989 standard is the reference for the production of this kind of steel, and its comprehensive mechanical properties, chemical composition and surface quality must meet the standard requirements.
