AMENDMENT NO. 2


                  AMENDMENT NO. 2 dated as of August 29, 1997 to the
Credit Agreement referred to below, between:

                  (1)      COMMONWEALTH INDUSTRIES, INC. (formerly known as
         Commonwealth Aluminum Corporation), a corporation duly
         organized and validly existing under the laws of the State
         of Delaware (the "Parent");

                  (2)  CI HOLDINGS INC. (formerly known as Commonwealth
         Industries, Inc.), a corporation duly organized and validly
         existing under the laws of the State of Delaware
         ("Holdings");

                  (3)  COMMONWEALTH  ALUMINUM  CORPORATION  (formerly  known  as
         Commonwealth  Aluminum  Lewisport,  Inc.), a corporation duly organized
         and validly existing under the laws of the State of Delaware ("CALI");

                  (4) ALFLEX CORPORATION  (formerly named CasTech Aluminum Group
         Inc.), a corporation duly organized and validly existing under the laws
         of the State of Delaware ("Alflex");

                  (5) BARMET ALUMINUM CORPORATION,  a corporation duly organized
         and validly existing under the laws of the State of Ohio ("Barmet");

                  (6) each of the  Subsidiaries of the Parent  identified  under
         the caption  "SUBSIDIARY  GUARANTORS"  on the  signature  pages  hereto
         (each, a "Subsidiary  Guarantor"  and,  collectively,  the  "Subsidiary
         Guarantors");

                  (7) each of the lenders that is a signatory hereto  identified
         under  the   caption   "LENDERS"   on  the   signature   pages   hereto
         (individually, a "Lender" and, collectively, the "Lenders"); and

                  (8) NATIONAL WESTMINSTER BANK PLC, as administrative agent for
         the Lenders (in such  capacity,  together  with its  successors in such
         capacity, the "Administrative Agent").

                  The Parent,  Holdings,  CALI,  Alflex,  Barmet, the Subsidiary
Guarantors,  the Lenders and the Administrative  Agent are parties to an Amended
and  Restated  Credit  Agreement  dated as of November  29, 1996 (as  heretofore
modified  and  supplemented  and in  effect  on the  date  hereof,  the  "Credit
Agreement").  The  Obligors  wish to  amend  the  Credit  Agreement  in  certain
respects, and accordingly, the parties hereto hereby agree as follows:







                  Section 1.  Definitions.  Except as otherwise defined
in this Amendment No. 2, terms defined in the Credit Agreement
are used herein as defined therein.

                  Section 2.  Amendments.  Effective as of the date
hereof (subject to satisfaction of the condition set forth in
Section 4 hereof), the Credit Agreement shall be amended as
follows:

                  A. The  definition of "Borrowing  Base" in Section 1.01 of the
Credit  Agreement  shall be amended by deleting at the end of the first sentence
of such definition the following words:

         ";  provided  that not more  than 50% of the  Borrowing  Base  shall be
         composed  of  Eligible  Inventory,  Eligible  Product-  in-Process  and
         Special  Inventory  (x) at any time prior to the Trigger Date or (y) at
         any time  thereafter,  when less than  $75,000,000  in the aggregate is
         outstanding under Permitted Receivables Financings".

                  B.  Section 9.10(a)(i) of the Credit Agreement shall be
amended by replacing the ratio of "3.25 to 1" set forth opposite
the fourth period listed therein with "3.30 to 1".

                  C.  Section  9.10(a)(ii)  of the  Credit  Agreement  shall  be
amended  by  replacing  the ratio of "4.60 to 1" set forth  opposite  the fourth
period listed therein with "5.00 to 1".

                  D.  Section 9.10(b)(i) of the Credit Agreement shall be
amended by replacing the ratio of "4.40 to 1" set forth opposite
the fourth period listed therein with "4.00 to 1".

                  E.  Section  9.10(b)(ii)  of the  Credit  Agreement  shall  be
amended  by  replacing  the ratio of "2.50 to 1" set forth  opposite  the fourth
period listed therein with "2.30 to 1".

                  F. Section 9.10(c) of the Credit Agreement shall be amended by
replacing  the amount of  "$82,500,000"  set forth  opposite  the fourth  period
listed therein with "$75,000,000".

                  G. Each reference in the Credit Agreement to "this Agreement",
"the  Credit  Agreement"  or words of similar  import,  or in the Notes or other
Credit Documents to "the Credit Agreement" or words of similar import,  shall be
deemed to refer to the Credit Agreement as amended hereby.

                  Section 3.  Representations and Warranties.  Each of
the Obligors represents and warrants to the Lenders and the
Administrative Agent that (i) no Default has occurred and is
continuing on the date hereof both before and after giving effect
to this Amendment No. 2 and (ii) the representations and






warranties  set forth in  Section  8 of the  Credit  Agreement  and in the other
Credit  Documents  are true and  complete in all  material  respects on the date
hereof (or, if any such  representation and warranty is expressly stated to have
been  made as of a  specific  date,  as of such  specific  date)  and as if each
reference  therein  to the  Credit  Agreement  referred  to each  of the  Credit
Agreement as amended hereby and to this Amendment No. 2. The Obligors agree that
the foregoing representation and warranty shall be a representation and warranty
made by an Obligor in a  modification  to the Credit  Agreement  for purposes of
Section 10(c) of the Credit Agreement.

                  Section 4. Conditions  Precedent.  The amendments in Section 2
hereof  shall  become  effective  as of the  date  hereof  upon  receipt  by the
Administrative Agent of one or more counterpart of this Amendment No. 2 executed
by each of the Obligors and the Lenders  constituting  the Majority  Lenders (or
evidence satisfactory to the Administrative Agent of such execution).

                  Section 5.  Miscellaneous.  Except as expressly herein
provided, the Credit Agreement shall remain unchanged and in full
force and effect.  The Parent shall reimburse the Administrative
Agent for all reasonable out-of-pocket costs and expenses
(including reasonable legal fees and disbursements) incurred by
it in connection with this Amendment No. 2.  This Amendment No. 2
may be executed in any number of counterparts, all of which taken
together shall constitute one and the same amendatory instrument
and any of the parties hereto may execute this Amendment No. 2 by
signing any such counterpart.  This Amendment No. 2 shall be
governed by, and construed in accordance with, the law of the
State of New York.








                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Amendment  No. 2 to be duly  executed and delivered as of the day and year first
above written.


                               THE PARENT

                               COMMONWEALTH INDUSTRIES, INC.



                               By
                                  Title:


                               HOLDINGS

                               CI HOLDINGS INC.



                               By
                                  Title:


                               THE BORROWERS

                               COMMONWEALTH ALUMINUM CORPORATION



                               By
                                  Title:


                               ALFLEX CORPORATION



                               By
                                  Title:


                               BARMET ALUMINUM CORPORATION



                               By
                                 Title:








                               SUBSIDIARY GUARANTOR

                               COMMONWEALTH ALUMINUM SALES
                                 CORPORATION



                               By
                                 Title:










                               LENDERS

                               NATIONAL WESTMINSTER BANK PLC



                               By
                                 Title:


                               PNC BANK, NATIONAL ASSOCIATION



                               By
                                 Title:


                               BANK OF MONTREAL



                               By
                                 Title:


                               MELLON BANK, N.A.



                               By
                                 Title:


                               NBD BANK, N.A.



                               By
                                 Title:










                               ABN AMRO BANK N.V.



                               By
                                 Title:

                               By
                                 Title:


                               THE BANK OF NOVA SCOTIA



                               By
                                 Title:


                               CAISSE NATIONALE DE CREDIT AGRICOLE



                               By
                                 Title:


                               THE FUJI BANK, LIMITED
                                 CHICAGO BRANCH



                               By
                                 Title:


                               THE BANK OF TOKYO-MITSUBISHI, LTD.,
                                 NEW YORK BRANCH



                               By
                                 Title:









                               CREDITANSTALT BANKVEREIN


                               By
                                 Title:

                               By
                                 Title:


                               THE INDUSTRIAL BANK
                                 OF JAPAN, LIMITED



                               By
                                 Title:


                               THE MITSUBISHI TRUST AND
                                 BANKING CORPORATION



                               By
                                 Title:


                               NATIONAL CITY BANK OF KENTUCKY



                               By
                                 Title:


                               SOCIETE GENERALE



                               By
                                 Title:








                               THE YASUDA TRUST AND
                                 BANKING CO., LTD.



                               By
                                 Title:

                               FIFTH THIRD BANK OF KENTUCKY, INC.



                               By
                                 Title:









                               THE ADMINISTRATIVE AGENT

                               NATIONAL WESTMINSTER BANK PLC,
                                 as Administrative Agent


                               By
                                 Title: