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.

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.

Reliance, Inc. operates as a diversified metal solutions provider and the metals service center company in the United States, Canada, and internationally. The company distributes a line of approximately 100,000 metal products, including alloy, aluminum, brass, copper, carbon steel, stainless steel, titanium, and specialty steel products; and provides metals processing services to general manufacturing, non-residential construction, transportation, aerospace, energy, electronics and semiconductor fabrication, and heavy industries. It sells its products directly to original equipment manufacturers, which primarily include small machine shops and fabricators. The company was formerly known as Reliance Steel & Aluminum Co. and changed its name to Reliance, Inc. in February 2024. Reliance, Inc. was founded in 1939 and is based in Scottsdale, Arizona.

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.

Ryerson Holding Corporation, together with its subsidiaries, processes and distributes industrial metals in the United States and internationally. It offers a line of products in carbon steel, stainless steel, alloy steels, and aluminum, as well as nickel and red metals in various shapes and forms, including coils, sheets, rounds, hexagons, square and flat bars, plates, structural, and tubing. The company also provides processing services. It serves various industries, including metal fabrication and machine shops, industrial machinery and equipment, commercial ground transportation, consumer durable equipment, food processing and agricultural equipment, construction equipment, oil and gas, and HVAC manufacturing. Ryerson Holding Corporation was founded in 1842 and is headquartered in Chicago, Illinois.

Metallus Inc. manufactures and sells alloy steel, and carbon and micro-alloy steel products in the United States and internationally. The company offers special bar quality (SBQ) bars, seamless mechanical tubes, precision steel components, and billets that are used in gears, hubs, axles, crankshafts and motor shafts, oil country drill pipes, bits and collars, bearing races and rolling elements, bushings, fuel injectors, wind energy shafts, anti-friction bearings, artillery and mortar bodies, and other applications. It also provides custom-make precision steel components. It offers its products and services to the automotive, energy, industrial equipment, mining, construction, rail, aerospace and defense, heavy truck, agriculture, and power generation sectors. The company was formerly known as TimkenSteel Corporation and changed its name to Metallus Inc. in February 2024. Metallus Inc. was founded in 1899 and is headquartered in Canton, Ohio.

Olympic Steel, Inc. processes, distributes, and stores metal products primarily in the United States, Canada, and Mexico. It operates in three segments: Carbon Flat Products; Specialty Metals Flat Products; and Tubular and Pipe Products. The company offers stainless steel and aluminum coil and sheet products, angles, rounds, and flat bars; alloy, heat treated, and abrasion resistant coils, sheets and plates; coated metals, including galvanized, galvannealed, electro galvanized, advanced high strength steels, aluminized, and automotive grades of steel; commercial quality, advanced high strength steel, drawing steel, and automotive grades cold rolled steel coil and sheet products; hot rolled carbon comprising hot rolled coil, pickled and oiled sheet and plate steel products, automotive grades, advanced high strength steels, and high strength low alloys; tube, pipe, and bar products, including round, square, and rectangular mechanical and structural tubing; hydraulic and stainless tubing; boiler tubing; carbon, stainless, and aluminum pipes; valves and fittings; and tin mill products, such as electrolytic tinplate, electrolytic chromium coated steel, and black plates. The company also provides cutting-to-length, slitting, shearing, blanking, tempering, stretcher-leveling, plate and laser processing, forming and machining, tube processing, finishing, and fabrication services, as well as value-added services, such as saw cutting, laser cutting, beveling, threading, and grooving services. It serves metal consuming industries, such as manufacturers and fabricators of transportation and material handling lift equipment, construction, mining and farm equipment, agriculture equipment, storage tanks, environmental and energy generation equipment, automobiles, food service, and electrical equipment, as well as general and plate fabricators, and metals service centers through direct sales force. Olympic Steel, Inc. was founded in 1954 and is based in Highland Hills, Ohio.

Greenwave Technology Solutions, Inc., through its subsidiary, Empire Services, Inc., operates metal recycling facilities in Virginia, North Carolina, and Ohio. The company recycling facilities collect, classify, and process raw scrap metals, including ferrous and nonferrous. It is also involved in the purchase and sale of scrap metals; and operation of automotive shredders. In addition, the company process aluminum, copper, stainless steel, nickel, brass, titanium, lead, alloys, and mixed metal products; and sells catalytic converters recovered from end-of-life vehicles to processors that extracts nonferrous precious metals comprising platinum, palladium, and rhodium. It serves large corporations, industrial manufacturers, retail customers, and government organizations. The company was formerly known as MassRoots, Inc and changed its name to Greenwave Technology Solutions, Inc. in October 2021. Greenwave Technology Solutions, Inc. was founded in 2002 and is headquartered in Chesapeake, Virginia.