Carbon Structural Steel and Low Alloy Structural Steel
Carbon structural steel and low alloy structural steel can be used in industrial, civil and military engineering and other fields of modern construction and transportation. These two kinds of steel are classified according to their carbon content and specific properties.
Carbon structural steel typically contains up to 0.2% carbon, and usually less than or equal to 0.25% carbon. It is divided into low carbon steel, medium carbon steel and high carbon steel. Carbon structural steel has good malleability, strength, welding performance and plasticity, and is widely used in various structures and mechanical parts.
Low alloy structural steel contains a small amount of alloying elements, the alloy composition is not one-sided, and the total alloying elements are generally less than 5%. The alloying element content is low, so the performance of the material is relatively stable. Low alloy structural steel is characterized by low alloy, good plasticity and toughness, low cost, and can be used as automobile and shipbuilding steel as well as bridges and buildings.
Hot-rolled and cold-rolled thin plates and steel strips
Hot-rolled and cold-rolled thin plates and steel strips are used in industrial operation.
The hot-rolled thin plates are generally referred to as the HR steel plates with a thickness of 2 to 25 mm. These plates are manufactured by hot rolling processing and have the characteristics of high strength and good surface quality. Hot-rolled thin plates can be classified into low carbon steel, medium carbon steel, high carbon steel and alloy structural steel according to their production processes, chemical compositions and performance index. These steel plates are widely used in cars, ships, bridges, buildings, machinery and other industries.
Cold-rolled thin plates have a thickness of 0.3 to 3.0 mm and are rolled at normal temperature by cold-rolled processing. The performance indexes are better than hot-rolled steel sheets, and they have better processing performance, electrical performance and plasticity. The main difference between hot-rolled and cold-rolled steel plates is that hot-rolled steel plates are rolled at high temperatures, while cold-rolled steel plates are rolled at normal temperatures. These steel plates are mainly used in the field of construction, bridge engineering and other industries.
Steel strips have a wide range of applications in construction, mechanical processing and transportation industry. The production process of steel strip is simple, and the material can be guaranteed and treated to obtain a certain mechanical properties. Steel strips can also be used for various surface treatments, giving it a wide range of applications.
In conclusion, carbon structural steel and low-alloy structural steel are widely used in modern construction and transportation. In addition, hot-rolled and cold-rolled thin plates and steel strips are also widely used in various industries.
