What does the term 'nonferrous' mean in relation to metals like aluminum?

The term 'nonferrous' specifically refers to metals that do not contain iron. This classification is important in metallurgy and materials science, as it defines a distinct category of metals that exhibit different properties compared to ferrous metals, which contain iron. Nonferrous metals, such as aluminum, copper, and zinc, are often valued for their resistance to corrosion, lightweight characteristics, and excellent electrical conductivity.

In application, the absence of iron in nonferrous metals makes them less prone to rusting, which is a critical factor in many manufacturing and construction processes. Understanding this term helps in selecting materials for various uses based on their properties, such as in the aerospace, automotive, and electrical industries.