S460N carbon steel plate sheet equivalent grades property

The effect of nitrogen (N) on the properties of S460N carbon steel plate sheet and so on steel is similar to that of carbon and phosphorus. With the increase of nitrogen content, the strength of steel can be significantly improved, especially the plasticity, especially toughness, and the weldability will be decreased, and the cold brittleness will be intensified. At the same time, aging tendency, cold brittleness and hot brittleness will be increased, which will damage the weldability and cold bending property of steel. Therefore, the nitrogen content in S460N carbon steel plate sheet and so on steel should be reduced and limited as much as possible. Generally, nitrogen content should not be higher than 0.018%.

The composition characteristics of low alloy high strength steel are low carbon ≤0.20%, low alloy, and total alloying elements is less than 3%. The low carbon content is to meet the process performance requirements of S460N carbon steel plate sheet, low alloy high strength steel for engineering structural parts such as plasticity, toughness, weldability and cold deformation; adding a small amount of alloying elements (mainly Mn) to achieve the purpose of improving mechanical properties. Mn not only has a significant strengthening effect on ferrite, it can also reduce the cold brittle temperature of steel, increase the amount of pearlite in the steel, and further improve the strength.

The market mentality tended to be cautious, and the market prices in most regions were adjusted in a narrow range. In terms of resources, the current market inventory continues to digest, but due to the high output of S460N carbon steel plate sheet, and the off-season effect of downstream demand is still continuing, resulting in a slow de stocking speed. In the short term, in the case of poor shipment of high price resources and cautious market mentality, it is expected that the price of S460N carbon steel plate sheet in the short term may be in weak consolidation operation.