The selection principle of steel plate for high-rise building is: it can not only make the structure safe and reliable, but also can save steel and reduce the cost. Different use conditions should have different quality requirements. In terms of the mechanical properties of steel such as A514 grade P high strength steel plate, yield point, tensile strength, elongation, cold bending property, impact toughness etc. are the indicators to measure the quality of steel. In the design of steel structure, the appropriate steel should be selected according to the characteristics of the structure. The selection of steel is not only an economic problem, but also related to the safety and service life of the structure.
On January 29, the domestic steel index (Myspic) composite index reported 162.87 points, a week-on-week increase of 0.28%. The hot rolled coil index was 160.7, up 0.4% week-on-week. The heavy plate index was 165.15, up 0.3% week-on-week; the cold rolled plate index was 123.58, up 0.91% week-on-week.
C45 steel is a medium carbon high quality steel with high strength. Chemical composition of C45 steel: C: 0.42 - 0.50, Si: ≤ 0.40, Mn: 0.50 - 0.80, S: ≤ 0.045, P: ≤ 0.045, Cr: ≤ 0.40, Ni: ≤ 0.40, Mo: ≤0.10. A514 grade P high strength steel plate, C45 steel is widely used in aerospace, electric power, petrochemical, shipbuilding, machinery, electronics, environmental protection and other industries.
