Exhibit 21
SUBSIDIARIES OF THE REGISTRANT

Name | State or Country of Organization
Alti Forge Holding S.a.r.l. | Switzerland
Alti Forge JSC | Russian Federation
Alumax LLC | Tennessee
Alumax U.K. Limited | United Kingdom
Arconic Aluminium Deutschland Internationale VmbH & Co. | Germany
Arconic Architectural Products LLC | Delaware
Arconic Architectural Products SAS | France
Arconic Austria Services GmbH | Austria
Arconic Automotive Castings G.P. | Michigan
Arconic China Investment Company Ltd. | China
Arconic Closure Systems International UK Limited | United Kingdom
Arconic Davenport LLC | Iowa
Arconic France Holding SAS | France
Arconic GmbH | Germany
Arconic Holding GmbH | Germany
Arconic Hungary Finance Kft | Hungary
Arconic India Private Ltd. | India
Arconic International Asia Ltd. | Hong Kong
Arconic Italia S.r.l. | Italy
Arconic Korea, Ltd. | South Korea
Arconic Kunshan Aluminum Products Company, Ltd. | China
Arconic Lafayette LLC | Indiana
Arconic Lancaster Corp. | Delaware
Arconic Manufacturing Gb Limited | United Kingdom
Arconic Massena LLC | New York
Arconic Nederland Holding B.V. | Netherlands
Arconic Participacoes Ltda. | Brazil
Arconic Qinhuangdao Aluminum Industries Co., Ltd. | China
Arconic Service LLC | Pennsylvania
Arconic Technology LLC | Pennsylvania
Arconic Tennessee LLC | Tennessee
Arconic Tube Specialties Inc. | Pennsylvania
Arconic UK Finance | United Kingdom
Arconic UK Holdings Limited | United Kingdom
Halethorpe Extrusions, Inc. | Delaware
Kawneer Aluminium Deutschland, Inc. | Germany
Kawneer Commercial Windows LLC | Pennsylvania
Kawneer Company Canada Limited | Canada
Kawneer Company, Inc. | Delaware
Kawneer Espana S.L. | Spain
Kawneer France S.A. | France
Kawneer Nederland B.V. | Netherlands
Kawneer U.K. Limited | United Kingdom
OOO Arconic Rus Investment Holdings | Russian Federation
Pimalco, Inc. | Arizona
Wexal International Limited | Ireland
ZAO Arconic SMZ | Russian Federation