EXHIBIT 32.1


                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In connection with the Quarterly Report of Allegheny Technologies Incorporated
(the "Company") on Form 10-K for the period ended December 31, 2004 as filed
with the Securities and Exchange Commission on the date hereof (the "Report"),
each of the undersigned, in the capacities and on the dates indicated below,
hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that to his knowledge:

1.       The Report fully complies with the requirements of Section 13(a) or
         15(d) of the Securities Exchange Act of 1934; and

2.       The information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations of
         the Company.




Date: February 28, 2005                  /s/ L. Patrick Hassey
                                         -----------------------------------
                                         L. Patrick Hassey
                                         President and Chief Executive Officer



Date: February 28, 2005                  /s/ Richard J. Harshman
                                         -----------------------------------
                                         Richard J. Harshman
                                         Executive Vice President-Finance
                                         and Chief Financial Officer