What is the main alloying element in the AISI 200 series?

In the AISI 200 series stainless steels, manganese is the primary alloying element. The AISI 200 series is known for its high manganese content, which plays a significant role in enhancing certain properties of the steel, such as strength and toughness. While chromium is also present in these alloys, it is not the main alloying element—rather, it is the base element that provides corrosion resistance. Nickel is typically found in higher concentrations in the AISI 300 series but is present in the 200 series as well, primarily to achieve specific properties. Carbon, although an essential alloying element in many steel grades, contributes less to the overall classification of the AISI 200 series compared to manganese. Thus, the focus on manganese as the main alloying element is accurate for this series, reflecting its unique composition and properties.