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 September 17, 2010

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-________

On September 17, 2010, ArcelorMittal issued the press release attached hereto as Exhibit 99.1 hereby incorporated by reference into this report on Form 6-K.

Exhibit List

Exhibit No.		Description
Exhibit 99.1	Press release dated September 17,2010 announcing that ArcelorMittal has reaffirmed its third quarter EBITDA guidance.

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: September 17, 2010

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

Exhibit Index

Exhibit No.		Description
Exhibit 99.1	Press release dated September 17,2010 announcing that ArcelorMittal has reaffirmed its third quarter EBITDA guidance.

EX-99.1

news release

ArcelorMittal has reaffirmed its third quarter EBITDA guidance

Luxembourg, 17 September 2010 (12:30 CET) – During an investor day held yesterday, September 16, ArcelorMittal Chairman and CEO Lakshmi Mittal reaffirmed the Company’s previously announced EBITDA* guidance for the third quarter, between US$2.1 billion and US$2.5 billion. 

*EBITDA is defined as operating income plus depreciation, impairment expenses and exceptional items.

Forward-looking statements

This document may contain forward-looking information and statements about ArcelorMittal and its subsidiaries. These statements include financial projections and estimates and their underlying assumptions, statements regarding plans, objectives and expectations with respect to future operations, products and services, and statements regarding future performance. Forward-looking statements may be identified by the words "believe," "expect," "anticipate," "target" or similar expressions. Although ArcelorMittal's management believes that the expectations reflected in such forward-looking statements are reasonable, investors and holders of ArcelorMittal's securities are cautioned that forward-looking information and statements are subject to numerous risks and uncertainties, many of which are difficult to predict and generally beyond the control of ArcelorMittal, that could cause actual results and developments to differ materially and adversely from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include those discussed or identified in the filings with the Luxembourg Stock Market Authority for the Financial Markets (Commission de Surveillance du Secteur Financier) and the United States Securities and Exchange Commission (the "SEC") made or to be made by ArcelorMittal, including ArcelorMittal's Annual Report on Form 20-F for the year ended December 31, 2009 filed with the SEC. ArcelorMittal undertakes no obligation to publicly update its forward-looking statements, whether as a result of new information, future events, or otherwise.