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 Annual Report of Hawk Corporation (the “Company”) on Form 10-K for the period ending December 31, 2006 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Ronald E. Weinberg, Chairman of the Board, Chief Executive Officer and President of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(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 result of operations of the Company.

/s/ RONALD E. WEINBERG

Ronald E. Weinberg

Chairman of the Board, Chief Executive Officer and President

March 23, 2007

This certification is made solely for the purpose of 18 U.S.C. § 1350, subject to the knowledge standard contained in that statute, and not for any other purpose.