What are the main components of the steel plate

(1)Low carbon: if the steel plate has high requirements for toughness, weldability and cold forming properties, its carbon content does not exceed 0.20%.
(2) Adding alloy elements to the steel plate, among which the manganese plays the most important role.
(3) Add auxiliary elements such as niobium, titanium or vanadium: a small amount of niobium, titanium or vanadium forms fine carbides or carbonitrides in steel plate, which is beneficial to obtain fine ferrite grains and improve the strength and toughness of steel plate.

In addition, the adding of a small amount of copper (≤0.4%) and phosphorus (about 0.1%), etc., can improve the corrosion resistance of the steel plate. The addition of a small amount of rare earth elements can desulfurize and degas, purify steel, and improve toughness and process performance of the steel plate.