Iron VS. Steel
There is a common misconception that iron and steel are interchangable. However, this is a fallacy. Iron is a word used to describe all metals of which pure iron is their main consituent. Because iron lacks carbon, it is very soft. Thus, it can be molded easily and even easier once it is heated. On the other hand, steel contains iron and carbon. Depending on the amount of carbon, the firmness of the metal can be determined. The more carbon makes the metal harder. The effect of heating steel depends on the amount of carbon the metal possesses. Metals containing more carbon will be more temperature sensitive. Alas, there is a difference between iron and steel. It is simple; however, simplicity does not equal insignificance.