Exhibit 99.1


                            Certification Pursuant to
                             18 U.S.C. Section 1350,
                             As Adopted Pursuant to
                  Section 906 of the Sarbanes-Oxley Act of 2002


I, Gordon D. Harnett, President, Chairman of the Board and Chief Executive
Officer of Brush Engineered Materials Inc. (the "Company"), do hereby certify in
accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to my knowledge,

1.   The Quarterly Report on Form 10-Q of the Company for the period ending
     September 27, 2002 (the "Periodic Report") fully complies with the
     requirements of Section 13(a) or 15(d) of the Securities and Exchange Act
     of 1934 (15 U.S.C. 78m or 78o(d)), and

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

Dated: November 1, 2002


                                      /s/ Gordon D. Harnett
                                      -------------------------------------
                                      Gordon D. Harnett
                                      Chairman of the Board, President and
                                              Chief Executive Officer