What term is used to describe metals with iron as a principal element?

The term used to describe metals with iron as a principal element is ferrous metals. This classification is important in understanding the properties and applications of these materials in aviation and other industries. Ferrous metals, such as steel and cast iron, are characterized by their magnetic properties and high tensile strength, making them suitable for structural applications where durability is crucial.

In contrast, non-ferrous metals do not contain significant amounts of iron, and thus they do not possess the properties associated with ferrous metals. Alloy metals refer to mixtures that typically involve ferrous or non-ferrous metals but do not define the presence of iron as a principal element. Composite materials consist of two or more constituent materials that provide advantageous properties but also do not specifically refer to metals containing iron. Understanding these distinctions is essential for selecting appropriate materials in structural applications, particularly in the field of aviation.