In it would aciaria we have the process of descarbonetacao, that is, removal of part of existing carbon in gusa. Other elements are reduced the amounts minims: Sulphur (s), match (p), Silicon (Itself) and the Manganese (Mn). Such elements have influence direct in the mechanical properties of the steel and must be controlled: . Manganese. In steel with little carbon it becomes the malleable steel ductil and. In steel with much carbon it hardens and it increases the resistance to the shocks; . Silicon.
It contributes for the increase of the hardness and tenacity. It prevents porosity. Match. In high texts it becomes the fragile and fragile steel. Sulphur. It becomes the granular and rough steel.
It weakens the resistance. According to It emends of Applied Technology I. Truck Concrete truck mixer. SENAI, p 85, the steel carbons are specified depending on the carbon text in three classrooms: . Steel with low carbon texts: 0,008% enter 0.3%; . Steel with average carbon texts: 0,3% enter 0.7%; . Steel with high carbon texts: 0,7% enter 2.11%. The logic applied to the steel carbon and of that the amount of carbon directly influences in the mechanical properties of steel how much the hardness, tenacity, resistance the traction, malleability, that is, the more carbon the steel to contain, harder it sera. logical valley also I oppose for it, that is, the less carbon it to contain, less hard it sera. 2. Steel In agreement League the text of league elements, that is, added elements in intentional way to confer to special steel properties, the steel can be subdivided in: . Steel of Low League (it adds of texts of inferior league 5%); . Steel of Measured League (elements of league between 5 and 10%); e. Steel of High League (with more than 10% of league elements). The main elements of league added to the steel carbon are: .