Air Products and Chemicals, Inc. provides atmospheric gases, process and specialty gases, equipment, and related services in the Americas, Asia, Europe, the Middle East, India, and internationally. The company produces atmospheric gases, including oxygen, nitrogen, and argon; process gases, such as hydrogen, helium, carbon dioxide, carbon monoxide, and syngas; and specialty gases for customers in various industries, including refining, chemical, manufacturing, electronics, energy production, medical, food, and metals. It also designs and manufactures equipment for air separation, hydrocarbon recovery and purification, natural gas liquefaction, and liquid helium and liquid hydrogen transport and storage. The company was founded in 1940 and is headquartered in Allentown, Pennsylvania.

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.

Alcoa Corporation, together with its subsidiaries, produces and sells bauxite, alumina, and aluminum products in the United States, Spain, Australia, Iceland, Norway, Brazil, Canada, and internationally. The company operates through two segments, Alumina and Aluminum. It engages in bauxite mining operations; and processes bauxite into alumina and sells it to customers who process it into industrial chemical products, as well as aluminum smelting and casting businesses. The company offers primary aluminum in the form of alloy ingot or value-add ingot to customers that produce products for the transportation, building and construction, packaging, wire, and other industrial markets; and flat-rolled aluminum in the form of sheet, which is sold primarily to customers that produce beverage and food cans. In addition, it owns hydro power plants that generates and sells electricity in the wholesale market to traders, large industrial consumers, distribution companies, and other generation companies. The company was formerly known as Alcoa Upstream Corporation and changed its name to Alcoa Corporation in October 2016. The company was founded in 1886 and is headquartered in Pittsburgh, Pennsylvania.

ChampionX Corporation provides chemistry solutions, artificial lift systems, and engineered equipment and technologies to oil and gas companies worldwide. The company operates through four segments: Production Chemical Technologies, Production & Automation Technologies, Drilling Technologies, and Reservoir Chemical Technologies. The Production Chemical Technologies segment offers onshore, offshore, and oil sands chemical solutions, such as corrosion inhibitors, scale inhibitors, emulsion breakers, and biocides to oil and natural gas production and midstream markets to manage and control corrosion, oil and water separation, flow assurance, sour gas treatment, and water-related issues. The Production & Automation Technologies segment provides artificial lift equipment, end-to-end digital automation solutions, and other production equipment and emissions monitoring solutions, including electrical submersible pumping systems, gas lift systems, jet pumps, multiplex surface pumps, plunger lift equipment, progressive cavity pumping systems, downhole rod lift systems, methane emissions monitoring solutions, chemical injection systems, flow control valves, and gauges under the Harbison-Fischer, Norris, Alberta Oil Tool, Oil Lift Technology, PCS Ferguson, Pro-Rod, Upco, Unbridled ESP, Norriseal-Wellmark, Quartzdyne, Spirit, Theta, Timberline, and Windrock brands. The Drilling Technologies segment offers polycrystalline diamond cutter inserts, bearings, valves, nozzles, and mining tools used in oil and gas drill bits under the US Synthetic brand; and high-density ceramic roof bolt mining tools for underground mining operations. The Reservoir Chemical Technologies segment provides chemistry-oriented solutions and technologies for well drilling, cementing, fracturing, acidizing, and other well interventions, as well as fracturing, drilling, cementing, acidizing additives. The company was founded in 1882 and is headquartered in The Woodlands, 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.

Enviri Corporation provides environmental solutions for industrial and specialty waste streams in the United States and internationally. The company operates through two segments: Harsco Environmental and Clean Earth. The Harsco Environmental segment offers on-site services under long-term contracts for material logistics, product quality improvement, and resource recovery for iron, steel, and metals manufacturing; manufactures and sells industrial abrasives, roofing granules, aluminum dross, and scrap processing systems; and meltshop and furnace services, such as under-vessel cleaning, removal of ladle slag, and general melt shop debris. This segment also produces and sells value-added downstream products from industrial waste-stream, including road surfacing and materials, such as slag-based asphalt product under the SteelPhal brand; abrasives and roofing materials under the BLACK BEAUTY and SURE/CUT brand names; Metallurgical Additives; agriculture and turf products comprising soil conditioners and fertilizers under the CrossOver and AgrowSil brands; and cement additives. The Clean Earth segment provides specialty waste processing, treatment, recycling, and beneficial reuse solutions for waste needs, such as hazardous, non-hazardous, and contaminated soils and dredged materials to industrial, retail, healthcare, and construction industries. The company was formerly known as Harsco Corporation and changed its name to Enviri Corporation in June 2023. The company was founded in 1853 and is headquartered in Philadelphia, Pennsylvania.

Ascent Industries Co. an industrials company, produces and distributes stainless steel pipe and tube and specialty chemicals in the United States and internationally. The company operates through two segments, Tubular Products and Specialty Chemicals. It manufactures welded pipes and tubes, primarily from stainless steel, duplex, and nickel alloys; and ornamental stainless steel tubes for automotive, commercial transportation, marine, food services, construction, furniture, healthcare, and other industries. The company also produces defoamers, surfactants, and lubricating agents for end users, including companies that supply agrochemical paper, metal working, coatings, water treatment, paint, mining, oil and gas, and janitorial and other applications. In addition, it provides contract manufacturing services, as well as operates as a multi-purpose plant to process various difficult to handle materials, including flammable solvents, viscous liquids, and granular solids. The company was formerly known as Synalloy Corporation and changed its name to Ascent Industries Co. in August 2022. Ascent Industries Co. was founded in 1945 and is headquartered in Schaumburg, Illinois.

Ampco-Pittsburgh Corporation, together with its subsidiaries, engages in manufacture and sale of specialty metal products and customized equipment to commercial and industrial users worldwide. The company operates through Forged and Cast Engineered Products (FCEP); and Air and Liquid Processing (ALP) segments. The FCEP segment produces forged hardened steel rolls, cast rolls and, forged engineered products that are used in cold rolling mills by producers of steel, aluminum, and other metals; cast rolls for hot strip mills, medium/heavy section mills, roughing mills, and plate mills; and forged engineered products for narrow and wide strip and aluminum mills, back-up rolls for narrow strip mills, and leveling rolls and shafts. The ALP segment produces custom-engineered finned tube heat exchange coils and related heat transfer products for various industries, including OEM/commercial, nuclear power generation, and industrial manufacturing; custom-designed air handling systems for institutional, pharmaceutical, and general industrial building markets; and manufacture centrifugal pumps for the fossil fueled power generation, marine defense, and industrial refrigeration industries. Ampco-Pittsburgh Corporation was incorporated in 1929 and is headquartered in Carnegie, Pennsylvania.