Founded in 1995, Iron Dynamics (IDI) is located in Butler, Indiana. IDI produces liquid pig iron and direct-reduced iron units. This iron is then used in the production of steel in the Flat Roll Division's electric-arc furnaces, as a substitute for purchased imported pig iron.
Steel Dynamics has long maintained an interest in developing reliable, lower-cost sources of high quality iron units. In 1998 SDI built Iron Dynamics to develop new technologies for the direct reduction of iron. Refining these processes was a long and arduous pioneering effort, but one that has delivered on its promise. Since 2007, Iron Dynamics has annually supplied over a quarter million tonnes of iron units to the Flat Roll Division. Increasingly, this iron is being provided in a more desirable molten liquid state that offers numerous operating advantages to SDI’s Flat Roll melting operations.