Haynes International
U.S. producer of corrosion-resistant and high-temperature nickel- and cobalt-based alloys.
Last updated August 26, 2026
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Overview
Haynes International is an American materials company specializing in corrosion-resistant and high-temperature alloys. Founded in Kokomo, Indiana, in 1912 by metallurgist and inventor Elwood Haynes, the business originated as Haynes Stellite Works and developed from Haynes's work on hard, wear-resistant metallic materials. Its products are primarily marketed under the Haynes and Hastelloy brands and are used in demanding environments where conventional steels and other materials may lose strength, resistivity, or structural integrity. The company's alloy portfolio is centered on nickel-based materials, with formulations that may also contain cobalt, chromium, molybdenum, tungsten, iron, silicon, manganese, carbon, aluminum, and titanium. These materials are supplied in forms including flat products, tubular products, and wire. Haynes's manufacturing footprint has included its main facility in Kokomo, Indiana; a tubular-products plant in Arcadia, Louisiana; a wire-products operation in Mountain Home, North Carolina; and operations in LaPorte, Indiana. The company has also maintained international commercial activity, including an Asian sales presence established in Singapore in 1999. Haynes serves technically demanding industrial markets. Aerospace has historically been its largest end market, followed by chemical processing and industrial gas turbines. Its alloys are used in components exposed to elevated temperatures, oxidation, corrosion, pressure, or combinations of these conditions. The company's historical involvement in aerospace includes materials used in Space Shuttle engine components and in the Spirit of St. Louis aircraft, while its chemical-processing applications rely on the corrosion resistance of grades sold under the Hastelloy name. The company has experienced several ownership changes. Union Carbide acquired the business in 1920, followed by Cabot Corporation in 1970, a management or investment group led by Morgan, Lewis, Githens, and Ahn in 1989, and The Blackstone Group in 1997. Debt associated with the Blackstone ownership period contributed to a bankruptcy filing in March 2004; Haynes emerged from bankruptcy approximately five months later. It subsequently expanded through the acquisition of Branford Wire & Manufacturing in 2004 and Leveltek Processing in 2015, and increased its LaPorte, Indiana operations in 2016. Haynes became a public company through an initial public offering in March 2007. In 2018, Michael Shor moved from chairman to president and chief executive officer, while Robert H. Getz became board chairman. Acerinox acquired Haynes International in 2024, making Haynes a subsidiary within the Spanish stainless-steel and specialty-alloys group. Following the transaction, Haynes remains associated with the production and marketing of high-performance alloys for aerospace, chemical processing, energy, and other specialized applications.
History
Haynes International traces its origins to 1912, when Elwood Haynes established Haynes Stellite Works in Kokomo, Indiana. Haynes had patented Stellite, a hard alloy family, in 1907 and received additional patents for improved versions in 1912. In 1915, he and local businessmen Richard Ruddell and James C. Patten incorporated the business as Haynes Stellite Company. Union Carbide acquired the company in 1920. Two years later, the business developed its first alloy sold under the Hastelloy name, a name derived from Haynes Stellite Alloy. Hastelloy subsequently became one of the company's principal commercial alloy families, particularly in applications requiring resistance to chemical attack and high temperatures. Haynes materials also gained an early aerospace association: the Spirit of St. Louis, flown by Charles Lindbergh across the Atlantic in 1927, included engine valves with Haynes hard-surfacing. The company changed ownership several times during the second half of the twentieth century. Cabot Corporation purchased it in 1970. In 1989, the investment banking firm Morgan, Lewis, Githens, and Ahn acquired the business. The Blackstone Group purchased Haynes in 1997. Debt incurred during that ownership period contributed to a bankruptcy filing in March 2004. Haynes emerged from bankruptcy in August of the same year. Haynes expanded its commercial and manufacturing reach during the 1990s and 2000s. It opened a sales office in Singapore in 1999, its first sales office in Asia. In 2004, it acquired Branford Wire & Manufacturing in Mountain Home, North Carolina, strengthening its wire-products capabilities. The company returned to the public markets through an initial public offering in March 2007. The company's materials have been used in aerospace programs, including the Space Shuttle program. According to the cited company history, Space Shuttle engines used 47 parts made from Haynes 188 alloy and seven made from Haynes Hastelloy B alloy. Hastelloy C-22 was used in fuel-line bellows associated with launch operations. These applications illustrate the company's focus on materials that retain useful properties under severe thermal and chemical conditions. In 2015, Haynes acquired Leveltek Processing. In 2016, it expanded its LaPorte, Indiana operations, with the expansion reported as creating 52 jobs. By 2018, the company operated facilities associated with flat products in Kokomo, tubular products in Arcadia, Louisiana, and wire products in Mountain Home, North Carolina, alongside its LaPorte operations. Its principal end markets included aerospace, chemical processing, and industrial gas turbines. In 2018, Michael Shor became president and chief executive officer after serving as chairman, and Robert H. Getz became chairman of the board. Acerinox acquired Haynes International in 2024. The transaction transformed Haynes from an independent public company into a subsidiary of Acerinox while preserving its identity as a producer and marketer of specialty alloys under the Haynes and Hastelloy brands.
- 2024
Acquired by Acerinox
[1]Acerinox acquires Haynes International, which becomes an Acerinox subsidiary.
- 2018
Executive transition
[1]Michael Shor becomes president and chief executive officer, and Robert H. Getz becomes board chairman.
- 2015
Leveltek Processing acquisition
[1]Haynes acquires Leveltek Processing as part of its manufacturing and processing expansion.
- 2007
Initial public offering
[1]Haynes becomes a public company through an IPO.
- 2004
Emerges from bankruptcy
[1]Following a March bankruptcy filing, the company emerges in August.
- 1997
Acquired by The Blackstone Group
[1]The Blackstone Group purchases Haynes in a leveraged ownership transaction.
- 1970
Acquired by Cabot Corporation
[1]Cabot Corporation purchases the company.
- 1927
Haynes materials support the Spirit of St. Louis
[1]The aircraft used engine valves with Haynes hard-surfacing during Charles Lindbergh's transatlantic flight.
- 1922
First Hastelloy alloy is developed
[1]The company introduces its first alloy under the Hastelloy brand.
- 1920
Acquired by Union Carbide
[1]Union Carbide acquires the company as it develops its specialty-alloy business.
Products and positioning
Specialty materials supplier focused on engineered alloys for extreme-temperature, corrosive, and mechanically demanding industrial environments.
Corrosion-resistant specialty alloys · 1922
Hastelloy alloys
Hastelloy is Haynes International's principal corrosion-resistant alloy family. These alloys are nickel-based formulations designed for demanding chemical-processing and other environments where resistance to corrosion, oxidation, and elevated temperatures is important. The family includes grades such as Hastelloy B and Hastelloy C-22, which have also been associated with aerospace and launch-system components.
High-temperature specialty alloys
Haynes alloys
The Haynes-branded portfolio comprises high-performance alloys developed for high-temperature strength, oxidation resistance, corrosion resistance, and wear-related requirements. The materials are used in aerospace, industrial gas turbines, chemical processing, and other applications where components must operate under severe thermal or mechanical conditions.
Cobalt-based high-temperature alloy
Haynes 188
Haynes 188 is a high-temperature alloy associated with aerospace applications and the Space Shuttle program. Its use in engine parts reflects the material's role in components requiring strength and stability in severe heat. The alloy is part of Haynes International's broader family of materials for high-temperature service.
Alloy sheet and flat forms
Flat products
Haynes's Kokomo operation specializes in flat alloy products. These forms provide material for fabricators and component manufacturers serving aerospace, chemical-processing, energy, and other industrial applications that require corrosion-resistant or high-temperature alloys.
Alloy tubing
Tubular products
The Arcadia, Louisiana facility specializes in tubular products. Haynes tubing is intended for engineered systems and components exposed to demanding thermal, chemical, or pressure conditions, although specific product grades and applications vary by customer requirement.
Specialty alloy wire · 2004
Wire products
The Mountain Home, North Carolina operation specializes in wire products. The business entered this capability through the 2004 acquisition of Branford Wire & Manufacturing, supporting customers that need specialty alloy wire for fabrication, joining, heating, or other industrial uses.
Brand decisions
2024
Acerinox acquisitionM&ABackground
Haynes International was an established producer of corrosion-resistant and high-temperature specialty alloys serving aerospace, chemical processing, and energy markets.
Action taken
Acerinox acquired Haynes International.
Aftermath
Haynes became a subsidiary of Acerinox and ceased operating as an independent publicly traded company.
2004
Bankruptcy reorganizationOtherBackground
Debt associated with the prior ownership period led Haynes International to file for bankruptcy in March 2004.
Action taken
The company entered bankruptcy proceedings and completed its emergence approximately five months later.
Aftermath
Haynes resumed operations and continued expansion, including the acquisition of Branford Wire & Manufacturing later in 2004.
1997
Blackstone acquisitionM&ABackground
The Blackstone Group acquired Haynes International during a period of successive ownership changes in the specialty-alloys business.
Action taken
Blackstone purchased the company and financed the ownership structure with debt.
Aftermath
The debt burden ultimately contributed to Haynes's bankruptcy filing in 2004.
Recent events
Haynes International elects Larry O. Spencer to its board[2]
Reported:
Haynes International elected retired U.S. Air Force General Larry O. Spencer to its board of directors.
Sources2 sources
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