Pure iron, when subjected to smelting processes, can be transformed into a wide range of steel products. The basic process involves heating pure iron to a high temperature, typically between 1500 and 1600 degrees Celsius, to melt it and then allowing it to cool and solidify into steel.

: By adding carbon to pure iron, carbon steel is produced. The amount of carbon present determines the hardness and strength of the steel. Low-carbon steel is relatively soft and easy to work with, while high-carbon steel is harder and more durable.

: Alloy steel is produced by adding elements such as chromium, nickel, molybdenum, and others to pure iron. These elements enhance the steel's corrosion resistance, high-temperature performance, and other specific properties.

: Stainless steel is a type of alloy steel that contains at least 10.5% chromium. This high chromium content gives stainless steel its excellent corrosion resistance and makes it suitable for applications in harsh environments.