ALD History
ALD Vacuum Technologies North America is a wholly owned subsidiary of ALD Vacuum Technologies GmbH.
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ALD Vacuum Technologies GmbH headquartered in Hanau near Frankfurt am Main, Germany, is a leading global supplier of equipment and systems for the thermal and thermochemical treatment of metallic materials in both solid and liquid form. The company operates engineering and service operations in Germany, France, India, China, Japan, Mexico, Thailand and since 1994 in the United States, as well as four heat treatment service centers (HTS) located in Germany, the United States, Mexico, and China.
With approximately 1000 employees and a strong innovation focus reflected in 57 patent families, ALD ranks among the world’s leading manufacturers in its field. The company is part of AMG Critical Materials N.V., a publicly listed technology group headquartered in the Netherlands, employing approximately 3,500 people globally with production sites and service locations across Europe, the Americas, Asia, and Africa.
ALD’s position as a technology leader is rooted in a unique industrial heritage spanning more than 150 years. Its origins trace back to the pioneers of vacuum technology, Wilhelm Carl Heraeus (1827–1904) and Ernst Leybold (1824–1907), as well as to Degussa, founded in 1873 by Friedrich Ernst Roessler (1813–1883). These historical foundations have shaped the development of today’s ALD Vacuum Technologies GmbH and continue to drive innovation in advanced materials processing.