The role of chromium in SA572 grade 65 carbon steel plate sheet

Vanadium element (V element) can refine grains in ordinary low carbon alloy steel, improve the strength and yield ratio and low temperature characteristics after normalizing, and improve the welding performance of steel, SA572 grade 65 carbon steel plate sheet included. Vanadium element (V element) is often used in combination with manganese, chromium, molybdenum, tungsten and other elements in structural steel because of its low hardenability under general heat treatment conditions. Vanadium in quenched and tempered steel is mainly to improve the strength and yield ratio of steel, refine the grain size, and pick up the overheating sensitivity.

Q690E material has high strength, good fatigue resistance; high toughness and low brittle transition temperature; good cold forming performance and welding performance. In addition, SA572 grade 65 carbon steel plate sheet, Q690 high strength steel plate and sheet has good corrosion resistance and certain wear resistance. High strength, especially in the normalizing or normalizing plus tempering state has a higher comprehensive mechanical properties.

Construction steel prices generally fluctuated within a narrow range. The main reason is that although the black disk surface oscillated down this week. However, due to the implementation of winter storage costs of steel mills, and the introduction of policies for returning home during the Spring Festival in various regions, the holiday time of each region has also been advanced. Most regions have holidays one after another, and the market has begun to enter the holiday state, and the overall price has also shown a narrow consolidation trend.