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 on Form 10-K of Metal Management, Inc. (the “Corporation”) for the period ended March 31, 2007 (the “Report”), I, Daniel W. Dienst, the Chairman of the Board, Chief Executive Officer and President of the Corporation, and I, Robert C. Larry, Executive Vice President, Finance, Chief Financial Officer, Treasurer and Secretary of the Corporation, each certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

     (1) to my knowledge, 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 Corporation.

/s/ Daniel W. Dienst  

Daniel W. Dienst 

Chairman of the Board, Chief
Executive Officer and President

May 24, 2007

/s/ Robert C. Larry  

Robert C. Larry 

Executive Vice President, Finance, Chief
Financial Officer, Treasurer and Secretary

May 24, 2007

     A signed original of this written statement required by Section 906 has been provided to the Corporation and will be retained by the Corporation and furnished to the Securities and Exchange Commission or its staff upon request.