Who is harder, iron or steel?
Steel and iron are mainly chemical ingredients, carbon is the main difference between pig iron and steel, pig iron containing high carbon content, generally in 3.5% ~ 4%, causing the pig iron hard and crisp. The difference between iron and steel is carbon content more than 2.11% called pig iron, the carbon content of <2.11% steel. So steel is harder than iron
No iron plastic, easy to deformation, not for processing, poor welding performance, and the performance of these steels are very good, especially with a certain number of alloying elements in steel, also has some special properties, such as high strength, wear resistance, heat resistance, good corrosion resistance, which makes use of more steel widely. That's why pig iron is to be made into steel.
Steel and iron are ferrous carbon alloys, which are mainly composed of iron. However, the difference in carbon content leads to changes in the state and structure of iron and carbon alloys at different temperatures.
