Steel Dynamics STLD

Materials & MiningMarket cap $20B5 connections

Steel Dynamics is the third-largest US steelmaker, operating highly efficient electric arc furnace minimills that melt scrap steel. Its mills are among the lowest-cost steel producers globally. Its Sinton, Texas flat-roll steel complex is one of the most advanced steel mills ever built. Automotive and construction drive demand.

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Customers 4

Companies Steel Dynamics sells to

TeslaAutomotive · $800BSteel Dynamics supplies flat-roll steel for Tesla
CaterpillarIndustrial & Defense · $190BFlat-rolled steel supply
General MotorsAutomotive · $55BSteel Dynamics steel for General Motors stamping
FordAutomotive · $50BSteel Dynamics sheet steel for Ford vehicle bodies

Competitors 1

Companies it competes with

Nucor CorporationMaterials & Mining · $34BSteel mini-mill rivalry

Other Materials & Mining companies

BHP Group Rio Tinto Freeport-McMoRan Vale SA Newmont Corporation Nucor Corporation Reliance Steel Albemarle MP Materials

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Relationships are compiled by VexMap from company filings, announcements and reporting, and last reviewed September 2026. Spotted something wrong? Tell us. Not investment advice.