Definition of steel

The word "steel" originated from the Old English word "stael", which referred to a type of iron alloy. The term "stael" was derived from the Proto-Germanic word "*stahliz", which was also the source of the Modern German word "Stahl". In the 14th century, the spelling "steel" emerged in Middle English, referring specifically to a type of iron alloy that was produced by adding carbon to molten iron. This process, known as smelting, allowed for the creation of a stronger and more durable metal than pure iron. Over time, the definition of "steel" expanded to include all types of iron alloys, regardless of their carbon content. Today, the term "steel" is used to describe a wide range of metals with different properties and uses, from construction materials to surgical instruments.