Founded by Roy Thompson in 1946, Thompson Aluminum Casting Company is a Cleveland-area foundry producing aluminum and magnesium castings, with a particular focus on aerospace and defense components. The Thomas family took ownership in 1972, and Brian Thomas now leads the company in its third generation of family ownership from a 60,000-square-foot Ohio facility. Thompson is Nadcap accredited and certified to ISO 9001 and AS9100, credentials that support its long-standing work for aerospace manufacturers.
Nadcap Accreditation for Non-Destructive Testing
certification
ISO 9001
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AS9100:2016
certification
Ross AluminumSince 1931, Ross Aluminum has operated in Sidney as a custom aluminum casting foundry, producing castings for aerospace, automotive, defense and small-engine applications. The company combines dry-sand, green-sand and permanent-mold work with in-house inspection and finishing capabilities, and its aerospace work is supported by AS9100 Rev D, ISO 9001:2015 and NADCAP approvals for special processes. Ross became part of minority business holding company P&THE Manufacturing in 2022, which kept the foundry operating under new ownership and management.SIDNEY, OH
ELLWOOD AluminumELLWOOD Aluminum is the family-owned Hubbard, Ohio, division of ELLWOOD Group, a company whose roots reach back to a forging shop founded by the Evans brothers in 1910. Its 105,000-square-foot facility opened in 2020 and serves demanding industrial customers with specialty aluminum castings, supported by more than a century of group experience. The operation is certified to AS9100:2016 and ISO 9001:2015 standards.HUBBARD, OH
Kovatch CastingsSince its start in a small Akron block building in 1976, Kovatch Castings has grown into a Uniontown manufacturer of precision investment castings for complex, high-strength components. The employee-owned company serves demanding aerospace, medical and defense applications from a 65,000-square-foot facility, producing castings in more than 150 alloys. Kovatch holds ISO 9001:2015, AS9100 and Nadcap NDT and welding certifications.UNIONTOWN, OH
Boose Aluminum Foundry Co., IncFour generations of family ownership have shaped Boose Aluminum Foundry Co., Inc. into an American-made aluminum sand-casting foundry, producing parts for demanding applications since 1933. Its Stevens, Pennsylvania, team combines long foundry experience with product-development support and in-house quality checks, including digital radiography and dimensional inspection. Boose is ISO 9001:2015 certified and ITAR registered, with particular experience serving defense and other industries where traceable, dependable castings matter.331524STEVENS, PA