About us

A great success story

Steel Dynamics was founded in 1993 by three steel-industry veterans—Keith Busse, Mark Millett, and Dick Teets—who shared a vision and a plan to create a company that would produce the highest-quality steel in the most efficient, cost-effective manner possible.

Since that time, our company has grown both organically and through acquisitions to become the fifth-largest producer of carbon steel in the United States. At its five steel mills, SDI makes flat-rolled steel, structural shapes, specialty shapes, rail, and engineered- and merchant-bar products.

In addition to the Flat Roll Group, SDI includes the Structural and Rail Division, Engineered Bar Products Division, Roanoke Bar Division, and Steel of West Virginia.

Our upstream ventures include OmniSource, an extensive metals-procurement and recycling network; Mesabi Mining; Mesabi Nugget, an iron-nugget production facility; and Iron Dynamics, a division on the flat-roll campus that produces liquid pig iron.

Downstream operations consist of six galvanizing lines, including those at The Techs; two coil-coating lines; and six New Millennium Building Systems plants. SDI also operates a rail-welding facility and Dynamic Composites, a subsidiary that makes rail ties.

At the Flat Roll Group, we produce a complete array of hot-rolled and cold-rolled steel. We also offer customers a wide variety of value-added finishing capabilities.

Our rapid climb in the steelmaking industry began with the construction of a greenfield mini-mill—now the Flat Roll Group campus—near the small town of Butler in northeast Indiana. In a fashion that has become emblematic of all our endeavors, the mill was built in record time. Phase I, which included facilities and equipment sufficient to establish a 1.2 million-ton annual capacity, was completed in a record 13 months—from groundbreaking to the start of production.

Production of hot-rolled steel began early in 1996, followed by the addition of a cold mill in late 1997. In the summer of 1998, further expansion pushed the mill’s annual capacity to 2.2 million tons. In 2003, we added a coil-coating line with the capacity to paint 300,000 tons of steel annually to the flat-roll campus.

Also in 2003, we acquired the former GalvPro facility at Jeffersonville, Indiana. Specializing in finishing thinner-gauge steel, Jeffersonville has the capacity to coat 300,000 to 350,000 tons annually of cold-rolled steel produced at Butler, and has the capacity to paint 190,000 tons annually on its state-of-the-art coil-coating line.

In 2007, we acquired The Techs—MetalTech, NexTech, and GalvTech—now a division of SDI in Pittsburgh that provides a wide range of value-added finishing services.

In 2009, we achieved an annual production capacity of 3 million tons at the Butler flat-roll mill, a goal we’d had in our sights since start-up. Although we weren’t producing at that full capacity during the recent economic downturn, we have no doubts that we have the ability to meet our customers’ needs now and in the future.