Exhibit 21.1



GLOBAL BRASS AND COPPER HOLDINGS, INC

List of Subsidiaries


Name
State or Jurisdiction Under Which Organized
Global Brass and Copper, Inc
Delaware
GBC Metals, LLC*
Delaware
GBC Metals Asia Pacific PTE Ltd.
Singapore
Olin Industrial (Hong Kong) Limited
China
Olin Luotong Metals (GZ) Co., Ltd.
China
Chase Brass and Copper Company, LLC
Delaware
A.J. Oster, LLC
Delaware
A.J. Oster Foils, LLC
Delaware
A.J. Oster Caribe, LLC
Delaware
A.J. Oster West, LLC
Delaware
A.J.O. Mexico S.A. de C.V.
Mexico
A.J.O. Global Services Mexico S.A. de C.V.
Mexico
* Also doing business as Olin Grass, Fineweld Tube, Bryan Metals, and Somers Thin Strip