What elements are in cast iron?
Some may remember that iron is an element. However, the cast iron made in foundries is a mixture of many elements. Most of them have a significant effect on the properties of the iron. Atoms of the element iron make up about 95% of all of the atoms in cast iron. The chart below gives typical percentages of some of the other elements found in gray and ductile iron. (This chart is given as an example only and should not be used as a reference to “good” iron.