What is the typical use of manganese in steel alloys?

Manganese is primarily used in steel alloys to reduce brittleness. It acts as a key alloying element that improves the overall strength and toughness of the steel. By counteracting the brittleness caused by impurities during the steel-making process or by the formation of certain microstructures, manganese helps improve the material's ductility and impact resistance. This makes steel more workable and enhances its ability to withstand sudden forces or impacts without fracturing.

Furthermore, manganese also contributes to the formation of a favorable grain structure in steel, leading to improved mechanical properties. While manganese does contribute to other attributes of steel, its most significant role is in mitigating brittleness, making it a crucial addition for enhancing the performance of steel in various applications.