What is the ASTM equivalent to NM400 plate equivalent

How to predict the price trend of medium and heavy plate, NM400 plate equivalent? First, the output of steel plate. The future annual plan of the major steel mills can be learned timely through the official website. Second, market demand forecast. Third, overall data of the global steel, judgment and rectification of foreign political trade, such as tariff. Of course, we should also consider the transportation cost and other factors, which will also affect the price of medium and heavy plate, NM400 plate equivalent.

Phosphorus is a very harmful element in NM400 plate equivalent steel. With the increase of phosphorus content, the strength, flexion ratio and hardness of NM400 plate equivalent steel increased, but the plasticity and toughness decreased significantly. In particular, the lower the temperature, the greater the impact on plasticity and toughness, increase the cold brittleness of steel.

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 NM400 plate equivalent, 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.