Astec Industries (ASTE) 10-Q 2004 Q3 Quarterly report

Exhibit32.1

CERTIFICATIONPURSUANT 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 ofAstec Industries, Inc. (the "Company") on Form 10-Q for the period ended September 30, 2004 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned,J. Don Brock, Chief Executive Officerof the Company,and F. McKamy Hall, Chief Financial Officer oftheCompany, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 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 of1934; and
2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ J. Don Brock

J. Don Brock

Chairman of the Board,Chief Executive Officer and President

November 8, 2004

/s/ F. McKamy Hall

F. McKamy Hall

Chief Financial Officer, Vice President and Treasurer

November 8, 2004