Carbon steel plate is a steel plate without alloying elements, or a steel plate with only Mn. It is a kind of steel with a carbon content of less than 2.11% and no special addition of metal elements. It can also be called ordinary carbon steel or carbon steel. سادو اسٽيل. In addition to carbon, there are also a small amount of silicon, manganese, sulfur, phosphorus and other elements in it. The higher the carbon content, the better the hardness and strength, but the plasticity will be worse.