Which is better, cold rolled steel or alloy steel?

Cold-rolled steel is steel produced by cold rolling. Cold rolling is a steel plate in which the steel plate is further thinned to a target thickness at room temperature. Compared with hot-rolled steel sheets, the thickness of cold-rolled steel sheets is more accurate, and the surface is smooth and beautiful, and it also has various superior mechanical properties, especially in terms of processing performance.
Alloy steel means that in addition to silicon and manganese as alloying elements or deoxidizing elements, steel also contains other alloying elements (such as chromium, nickel, molybdenum, vanadium, titanium, copper, tungsten, aluminum, cobalt, niobium, zirconium and other elements etc.), and some also contain some non-metallic elements (such as boron, nitrogen, etc.) steel. Due to the different types and quantities of alloying elements contained in alloy steel, and appropriate technological measures are taken, they can have high strength, toughness, hardenability, wear resistance, corrosion resistance, low temperature resistance, and heat resistance. , heat strength, red hardness and other special properties.