ATI Inc., formerly known as Allegheny Technologies Incorporated, traces its origins back to 1910 with the founding of Allegheny Steel Company in Pittsburgh, Pennsylvania. A pivotal moment in its history came in 1996 when Pittsburgh’s Allegheny Ludlum Corporation merged with California-based Teledyne, giving birth to Allegheny Technologies. This merger combined Allegheny’s century-old steelmaking legacy with Teledyne’s aerospace and industrial strengths. Over the following decades, ATI continued to expand, acquiring specialist businesses—such as Wah Chang for refractory metals and Ladish for high-performance forgings—building a vertically integrated metals powerhouse. The company underwent a rebranding to ATI Inc. in 2022 and relocated its headquarters from Pittsburgh to Dallas, Texas.
ATI manufactures advanced specialty materials, serving two main segments: High Performance Materials & Components and Advanced Alloys & Solutions. It produces titanium and titanium alloys, nickel- and cobalt-based superalloys, zirconium, hafnium, niobium, stainless and specialty steels, as well as precision forgings, billets, rolled products, and machined components. These materials are critical in demanding applications across aerospace, defense, energy, medical, and industrial markets. ATI's materials have been used in commercial jet engines, medical devices, oil and gas systems, and electronics.
ATI's innovations include proprietary titanium alloys, powder-metallurgy processes, and additive manufacturing through acquisitions like Crucible Compaction Metals and Addaero. In 2024, ATI sold off its precision rolled-strip operations to focus on core aerospace and defense markets. ATI's portfolio also includes custom forgings from the historic Ladish facilities and refractory alloys from Wah Chang—all key components in advanced engine and structural systems.
ATI continues to deepen its presence in aerospace and defense, expanding production capacity—such as its North Carolina titanium lines and Richland, Washington expansion—and investing in new metallurgical capabilities. Divesting non-core assets like rolled strip facilities has sharpened its focus on high-growth, high-margin markets . Through ongoing investment in powder metallurgy, additive manufacturing, and precision alloys, ATI is strengthening its role as a critical supplier to jet engine makers, defense contractors, medical device firms, and others who depend on high-performance materials.