UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16
under the Securities Exchange Act of 1934

Metso Corporation

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F

Form 20-F þ      Form 40-F o

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o      No þ

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g-3-2(b):82-                    

 

 

SIGNATURES

Date September 28, 2006

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf of the undersigned, thereunto duly authorized.

Name:

Olli Vaartimo		Aleksanteri Lebedeff
Executive Vice President and CFO		Senior Vice President,
Metso Corporation		General Counsel
		Metso Corporation

Moody’s upgraded rating on Metso Corporation to Baa3

(Helsinki, Finland, September 28, 2006) — Metso Corporation (NYSE: MX; OMXH: MEO1V)

Moody’s Investor Service has upgraded the long-term credit ratings of Metso Corporation to Baa3 from Ba1. The outlook on ratings is considered stable.

Metso is a global engineering and technology corporation with 2005 net sales of approximately EUR 4.2 billion. Its 22,000 employees in more than 50 countries serve customers in the pulp and paper industry, rock and minerals processing, the energy industry and selected other industries.

www.metso.com

For further information, please contact:
Pekka Hölttä, Senior Vice President, Corporate Treasurer, Metso Corporation,
tel. +358 204 84 3195
Johanna Sintonen, Vice President, Investor Relations, Metso Corporation, tel. +358 20 484 3253

or

USA: Mike Phillips, Senior Vice President, Finance and Administration, Metso USA, Inc., tel. +1 770 246 7237.