What are metals composed primarily of iron classified as?

Metals that are composed primarily of iron are classified as ferrous metals. This classification is significant because ferrous metals are known for their magnetic properties and high strength, making them widely used in construction and various manufacturing processes. The term "ferrous" specifically refers to the presence of iron in these metals.

Understanding ferrous metals is crucial for those working with materials that require certain structural and mechanical properties, as they include common materials such as steel and cast iron. These metals are often characterized by their susceptibility to corrosion, which leads to the necessity of protective coatings or alloying with other elements to enhance their durability.

In contrast, the other classifications pertain to different types of metals. Alloy metals are combinations of two or more metals, nonferrous metals do not contain significant amounts of iron, and composite metals are made from two or more materials to take advantage of their combined properties. Recognizing these distinctions helps in selecting the appropriate materials for specific applications in various industries.