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.

United States Steel Corporation produces and sells flat-rolled and tubular steel products primarily in North America and Europe. The company operates through North American Flat-Rolled (Flat-Rolled), Mini Mill, U. S. Steel Europe (USSE), and Tubular Products (Tubular) segments. The Flat-Rolled segment offers slabs, strip mill plates, sheets, and tin mill products, as well as iron ore and coke. This segment serves customers in the service center, conversion, transportation, automotive, construction, container, appliance, and electrical markets. The Mini Mill segment provides hot-rolled, cold-rolled, and coated sheets and electrical steel products. This segment serves customers in the automotive, construction, pipe and tube, sheet converter, electrical, solar industrial equipment, and service center markets. The USSE segment provides slabs, strip mill plates, sheets, tin mill products, and spiral welded pipes. This segment serves customers in the construction, container, appliance and electrical, service center, conversion, oil, gas, and petrochemical markets. The Tubular segment offers seamless and electric resistance welded steel casing and tubing products, as well as standard and line pipe and mechanical tubing products primarily to customers in the oil, gas, and petrochemical markets. It also engages in the real estate business. United States Steel Corporation was founded in 1901 and is headquartered in Pittsburgh, Pennsylvania.

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.

Cleveland-Cliffs Inc. operates as a flat-rolled steel producer in North America. The company offers hot-rolled, cold-rolled, electrogalvanized, hot-dip galvanized, hot-dip galvannealed, aluminized, galvalume, enameling, and advanced high-strength steel products; austenitic, martensitic, duplex, precipitation hardening, and ferritic stainless steel products; plates; and grain oriented and non-oriented electrical steel products, as well as slab, scrap, iron ore, coal, and coke. It also provides tubular components, including carbon steel, stainless steel, and electric resistance welded tubing. In addition, the company offers tinplate products, such as electrolytic tin coated and chrome coated sheet, and tin mill products; tooling and sampling; ingots, rolled blooms, and cast blooms; and hot-briquetted iron products. Further, it owns five iron ore mines in Minnesota and Michigan. The company serves automotive, infrastructure and manufacturing, distributors and converters, and steel producers. The company was formerly known as Cliffs Natural Resources Inc. and changed its name to Cleveland-Cliffs Inc. in August 2017. Cleveland-Cliffs Inc. was founded in 1847 and is headquartered in Cleveland, Ohio.

Gerdau S.A., together with its subsidiaries, operates as a steel producer company. The company operates through Brazil Business, North America Business, South America Business, and Special Steel Business segments. It also provides semi-finished products, including billets, blooms, and slabs; common long rolled products, such as rebars, wire rods, merchant bars, light shapes, and profiles to the construction and manufacturing industries; drawn products comprising barbed and barbless fence wires, galvanized wires, fences, concrete reinforcing wire mesh, nails, and clamps for manufacturing, construction, and agricultural industries; and special steel products used in auto parts, light and heavy vehicles, and agricultural machinery, as well as in the oil and gas, wind energy, machinery and equipment, mining and rail, and other markets. In addition, the company offers flat products, such as hot-rolled steel coils and heavy plates; and resells flat steel products. Further, it operates mines that produce iron ore located in the Brazilian state of Minas Gerais. The company sells its products through independent distributors, direct sales from the mills, and its retail network. Gerdau S.A. was founded in 1901 and is based in São Paulo, Brazil.

Arch Resources, Inc. engages in the production and sale of metallurgical products. It operates in two segments, Metallurgical and Thermal. The company operates active mines. It owned or controlled primarily through long-term leases of coal land in Ohio, Maryland, Virginia, West Virginia, Wyoming, Kentucky, Montana, Pennsylvania, Colorado, and Illinois; and smaller parcels of property in Alabama, Indiana, Washington, Arkansas, California, Utah, and Texas. The company sells its products to utility, industrial, and steel producers in the United States and internationally. Arch Resources, Inc. was incorporated in 1969 and is headquartered in Saint Louis, Missouri.

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.

Universal Stainless & Alloy Products, Inc., together with its subsidiaries, manufactures and markets semi-finished and finished specialty steel products in the United States and internationally. Its products include stainless steel, nickel alloys, tool steel, and various other alloyed steels. The company offers semi-finished and finished long products in the form of ingots, billets, and bars; flat rolled products, such as slabs and plates; and customized shapes primarily for original equipment manufacturers, which are cold rolled from purchased coiled strip, flat bar, or extruded bar. It also offers conversion services on materials supplied by its customers. The company's products are used in aerospace, power generation, oil and gas, heavy equipment, and general industrial markets. It sells its products to service centers, forgers, rerollers, and original equipment manufacturers. The company was incorporated in 1994 and is headquartered in Bridgeville, Pennsylvania.