Haynes International (HAYN) 10-Q 2007 Q2 Quarterly report

Exhibit 32.1

Certifications Pursuant to 18 U.S.C. Section 1350

As Adopted Pursuant to Section 906 of the

Sarbanes—Oxley Act of 2002

I, Marcel Martin, the Vice President Finance and Chief Financial Officer of Haynes International, Inc., certify that (i) the quarterly report on Form 10-Q for the fiscal quarter ended March 31, 2007 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Haynes International, Inc. as of the dates and for the periods set forth therein.

/s/ Marcel Martin

Marcel Martin

Vice President Finance and

Chief Financial Officer

May 7, 2007

Date

I, Francis J. Petro, the President and Chief Executive Officer of Haynes International, Inc., certify that (i) the quarterly report on Form 10-Q for the fiscal quarter ended March 31, 2007 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, and (ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Haynes International, Inc. as of the dates and for the periods set forth therein.

/s/ Francis J. Petro

Francis J. Petro

President and Chief Executive Officer

May 7, 2007

Date