Vale S.A., together with its subsidiaries, produces and sells iron ore, iron ore pellets, nickel, and copper in Brazil and internationally. The company operates through Iron Solutions and Energy Transition Materials segments. The Iron Solutions segment produces and extracts iron ore and pellets, and other ferrous products; and provides related logistic services. The Energy Transition Materials segment produces and extracts nickel; and its by-products, such as gold, silver, cobalt, precious metals, and others, as well as copper used in the construction sector to produce pipes and electrical wires. The company was formerly known as Companhia Vale do Rio Doce and changed its name to Vale S.A. in May 2009. Vale S.A. was founded in 1942 and is headquartered in Rio De Janeiro, Brazil.

Nucor Corporation engages in manufacture and sale of steel and steel products. It operates in three segments: steel mills, steel products, and raw materials. The Steel Mills segment produces hot-rolled, cold-rolled, and galvanized sheet steel products; plate steel products; wide-flange beams, beam blanks, and H-piling and sheet piling structural steel products; bar steel products, such as blooms, billets, concrete reinforcing and merchant bars, and engineered special bar quality products; and engages in the steel trading and rebar distribution businesses. This segment sells its products to steel service centers, fabricators, and manufacturers in the United States, Canada, and Mexico. The Steel Products segment offers steel joists and joist girders, steel decks, and galvanized torque tubes for used in solar arrays, hollow structural section steel tubing, electrical conduit, fabricated concrete reinforcing steel, cold finished steel, steel fasteners, steel grating and expanded metal, wire and wire mesh, metal building systems, insulated metal panels, steel racking, overhead doors, and utility towers and structures for communications and energy transmission. This segment is also involved in the piling distribution business. The Raw Materials segment produces direct reduced iron (DRI); brokers ferrous and nonferrous metals, pig iron, hot briquetted iron, and DRI; supplies ferro-alloys; processes ferrous and nonferrous scrap metal; and engages in the natural gas production and industrial gas business. This segment sells its ferrous scrap to electric arc furnace steel mills and foundries for manufacturing process; and nonferrous scrap metal to aluminum can producers, secondary aluminum smelters, steel mills and other processors, and consumers of various nonferrous metals. It markets its products through in-house sales force; and internal distribution and trading companies. Nucor Corporation was founded in 1905 and is headquartered in Charlotte, North Carolina.

ArcelorMittal S.A., together with its subsidiaries, operates as integrated steel and mining companies in the United States, Europe, and internationally. It offers semi-finished flat products, including slabs; finished flat products comprising plates, hot- and cold-rolled coils and sheets, hot-dipped and electro-galvanized coils and sheets, tinplate, and color coated coils and sheets; semi-finished long products, such as blooms and billets; finished long products consisting of bars, wire-rods, structural sections, rails, sheet piles, and wire-products; and seamless and welded pipes and tubes. The company also provides mining products, such as iron ore lumps, fines, concentrates, pellets, and sinter feeds; and coking coal. It sells its products to various customers in the automotive, appliance, engineering, construction, energy, and machinery industries through a centralized marketing organization, as well as distributors. The company has iron ore mining activities in Brazil, Bosnia, Canada, Liberia, Mexico, South Africa, and Ukraine. ArcelorMittal S.A. was founded in 1976 and is headquartered in Luxembourg City, Luxembourg.

Steel Dynamics, Inc., together with its subsidiaries, operates as a steel producer and metal recycler in the United States. The Steel Operations segment offers hot rolled, cold rolled, and coated steel products; parallel flange beams and channel sections, flat bars, large unequal leg angles, and reinforcing steel bars, as well as standard strength carbon, intermediate alloy hardness, and premium grade rail products; engineered special-bar-quality products, merchant-bar-quality products, and other engineered round steel bars; channels, angles, flats, merchant rounds, and reinforcing steel bars; and specialty shapes and light structural steel products. This segment also engages in turning, polishing, straightening, chamfering, precision saw-cutting, and heat treating of bar products. Its products are used in construction, automotive, manufacturing, transportation, heavy and agriculture equipment, and pipe and tube markets. The Metals Recycling Operations segment is involved in the ferrous and nonferrous scrap metal processing, transportation, marketing, brokerage, and scrap management services. Its ferrous products include heavy melting steel, busheling, bundled scrap, shredded scrap, steel turnings, and cast-iron products; and nonferrous products comprise aluminum, brass, copper, stainless steel, and other nonferrous metals. The Steel Fabrication Operations segment produces steel non-residential building components, such as steel joists, girders, trusses, and steel deck products for non-residential steel fabricators, metal building companies, general construction contractors, developers, owners, brokers, and governmental entities, as well as e-commerce warehouses, data centers, metal buildings, and education and commercial building projects. The Aluminum Operations segment offers recycled aluminum flat rolled products. The company also exports its products. Steel Dynamics, Inc. was founded in 1993 and is headquartered in Fort Wayne, Indiana.

Ternium S.A., together with its subsidiaries, manufactures and distributes steel products in Mexico, Southern Region, Brazil, and internationally. It operates through three segments: Steel, Mining, and Usiminas. The Steel segment offers slabs, hot and cold rolled products, coated products, roll formed and tubular products, bars, billets, and other products. Its Mining segment sells iron ore and pellets. The Usiminas segment offers iron ore extraction, steel transformation, and production of capital goods and logistics; and manufactures and sells various products and raw materials, such as flat steel, iron ore, and stamped steel parts for the automotive industry and products for the civil construction and capital goods industry. It also provides medical and social; scrap; renewable energy; and engineering and other services, as well as operates as a distribution company. In addition, the company engages in the exploration, exploitation, and pelletizing of iron ore. Ternium S.A. was founded in 1961 and is based in Luxembourg City, Luxembourg. Ternium S.A. is a subsidiary of Techint Holdings S.à r.l.

Commercial Metals Company manufactures, recycles, and fabricates steel and metal products, and related materials and services in the United States, Poland, China, and internationally. It operates through three segments: North America Steel Group; Europe Steel Group; and Emerging Businesses Group. The company processes and sells ferrous and nonferrous scrap metals to steel mills and foundries, aluminum sheet and ingot manufacturers, brass and bronze ingot makers, copper refineries and mills, secondary lead smelters, specialty steel mills, high temperature alloy manufacturers, and other consumers. It also manufactures and sells finished long steel products, including reinforcing bar, merchant bar, light structural, and other special sections, as well as semi-finished billets for rerolling and forging applications. In addition, the company provides fabricated rebar used to reinforce concrete primarily in the construction of commercial and non-commercial buildings, hospitals, convention centers, industrial plants, power plants, highways, bridges, arenas, stadiums, and dams; sells and rents construction-related products and equipment to concrete installers and other businesses; and manufactures and sells strength bars for the truck trailer industry, special bar steels for the energy market, and armor plates for military vehicles. Further, it manufactures rebars, merchant bars, and wire rods; and sells fabricated rebars, wire meshes, welded steel mesh, wire rod, cold rolled rebar, cold rolled wire rod, assembled rebar cages and other fabricated rebar by-products to fabricators, manufacturers, distributors, and construction companies. The company was founded in 1915 and is headquartered in Irving, Texas.

Companhia Siderúrgica Nacional operates as an integrated steel producer in Brazil and Latin America. It operates through five segments: Steel Industry, Mining, Logistics, Energy, and Cement. The company offers flat steel products, such as hot and cold rolled, galvanized, galvalume, pre-painted, and metal sheets products; coil, sheets, and derivatives; tiles and derivatives, pipes, and profiles; long steel products; steel packaging solutions for the food industry; chemical packaging solution; and carbochemical products. It also provides steel cutting services; produces and sells cement; operates railway and port facilities; and generates electric power from its thermoelectric co-generation and hydroelectric power plants. In addition, the company explores for iron ore reserves at Casa de Pedra and Engenho mines located in the city of Congonhas; and limestone and dolomite at the Bocaina mine located in the city of Arcos in the state of Minas Gerais, Brazil, as well as produces tin. Companhia Siderúrgica Nacional was founded in 1941 and is headquartered in São Paulo, Brazil.

Grupo Simec, S.A.B. de C.V. manufactures, processes, and distributes special bar quality (SBQ) steel and steel alloys products in Mexico, the United States, Brazil, Canada, Latin America, and internationally. The company produces I-beams, channels, structural and commercial angles, hot rolled bars, flat bars, rebars, cold-finished bars, electro-welded wire mesh and mesh panels, and wire rods, as well as semi-finished tube rounds and other semi-finished trade products. Its SBQ products are used across a range of engineered end-user applications, including axles, hubs, and crankshafts for automobiles and light trucks, machine tools, and off-highway equipment; and structural steel products are used in the non-residential construction market and other construction applications. The company also exports its steel products to Central and South America, and Europe. The company was founded in 1934 and is headquartered in Guadalajara, Mexico. Grupo Simec, S.A.B. de C.V. is a subsidiary of Industrias CH, S.A.B. de C.V.