6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

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FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

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Dated December 20, 2012

Commission File Number: 333-146371

ARCELORMITTAL

(Translation of registrant’s name into English)

19 Avenue de la Liberté

L-2930 Luxembourg

Luxembourg

(Address of principal executive offices)

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

Form 20-F  x                               Form 40-F o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): _____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): _____

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 x

If “Yes” marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):  82-________

                     Exhibit 99.1 is hereby incorporated by reference into this report on Form 6-K.

Exhibit List

Exhibit No.		Description
Exhibit 99.1	Press release dated December 20, 2012 reporting thatArcelorMittal extends conversion date for $1bn mandatory convertible bond.

SIGNATURES

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

Date: December 20, 2012

By:	/s/ Henk Scheffer
	Name:	Henk Scheffer
	Title:	Company Secretary

Exhibit Index

Exhibit No.		Description
Exhibit 99.1	Press release dated December 20, 2012 reporting thatArcelorMittal extends conversion date for $1bn mandatory convertible bond.

EX-99.1

          

news release

ArcelorMittal extends conversion date for $1bn mandatory convertible bond

Luxembourg, 20 December 2012 – ArcelorMittal announces the extension of the conversion date for the $1bn privately placed mandatory convertible bond (MCB) issued on 28 December 2009 by one of its wholly-owned Luxembourg subsidiaries. This amendment to the MCB, which is mandatorily convertible into preferred shares of such subsidiary, was executed on 18 December 2012.

The mandatory conversion date of the bond has been extended to 31 January 2014. The other main features of the MCB remain unchanged. The bond was placed privately with a Luxembourg affiliate of Credit Agricole Corporate and Investment Bank and is not listed.

The subsidiary has simultaneously executed amendments providing for the extension of the outstanding notes into which it invested the proceeds of the bond issuance, which are linked to shares of the listed companies Eregli Demir Va Celik Fab. T. AS of Turkey and China Oriental, both of which are held by ArcelorMittal subsidiaries.

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