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.

Carpenter Technology Corporation engages in the manufacture, fabrication, and distribution of specialty metals in the United States, Europe, the Asia Pacific, Mexico, Canada, and internationally. It operates in two segments, Specialty Alloys Operations and Performance Engineered Products. The company offers specialty alloys, including titanium alloys, powder metals, stainless steels, alloy steels, and tool steels, as well as additives, and metal powders and parts. It serves to aerospace, defense, medical, transportation, energy, industrial, and consumer markets. The company was founded in 1889 and is headquartered in Philadelphia, Pennsylvania.

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.

The Timken Company designs, manufactures, and sells engineered bearings and industrial motion products, and related services in the United States and internationally. The company's Engineered Bearings segment provides various bearing products, including tapered, spherical, and cylindrical roller bearings; plain bearings, metal-polymer bearings, and rod end bearings; radial, angular, and precision ball bearings; thrust and specialty ball bearings; journal bearings; and housed or mounted bearings. This segment serves wind energy, agriculture, construction, food and beverage, metals and mining, automotive and truck, aerospace, rail, and other industries under the Timken, GGB, and Fafnir brands. Its Industrial Motion segment offers a portfolio of engineered products comprising industrial drives, automatic lubrication systems, linear motion products and systems, chains, belts, seals, couplings, filtration systems, and industrial clutches and brakes. It also provides industrial drivetrain and bearing repairing services. This segment serves a range of industries, such as solar energy, automation, construction, agriculture and turf, passenger rail, marine, aerospace, packaging and logistics, medical, and others under the Philadelphia Gear, Cone Drive, Rollon, Nadella, Groeneveld, BEKA, Diamond, Drives, Timken Belts, Spinea, Des-Case, Lagersmit, Lovejoy, and PT Tech brands. The Timken Company was founded in 1899 and is headquartered in North Canton, Ohio.

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.

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.

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.