Washington, D.C.  20549


                                    FORM 8-K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934


                Date of Report (Date of earliest event reported):
                                  May 16, 2007

                         United States Steel Corporation
             (Exact name of registrant as specified in its charter)

       Delaware                1-16811               25-1897152
   ---------------     ----------------------    -------------------
   (State or other        (Commission File          (IRS Employer
   jurisdiction of             Number)           Identification No.)

       600 Grant Street, Pittsburgh, PA              15219-2800
      ----------------------------------             ----------
       (Address of principal executive               (Zip Code)

                                 (412) 433-1121
                         (Registrant's telephone number,
                              including area code)


Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[  ] Written communications pursuant to Rule 425 under the Securities Act (17
     CFR 230.425)

[  ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR

[  ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[  ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))


Item 2.04. Triggering Events That Accelerate or Increase a Direct Financial
Obligation or an Obligation under an Off-Balance Sheet Arrangement

On May 21, 2007 U. S. Steel announced that it has called for full redemption on
June 20, 2007 (the "Redemption Date"), all of its outstanding 9.75% Senior Notes
due 2010 (the "9.75% Notes") at a price of $1,048.75, plus accrued interest to,
but excluding, the Redemption Date.  The outstanding aggregate principal amount
of the 9.75% Notes is $378,500,000.  U. S. Steel will fund this redemption with
a portion of the proceeds from the sale of the New Senior Notes that closed on
May 21, 2007.  A copy of the press release announcing the redemption is filed
herewith as Exhibit 99.2.

Item 8.01. Other Events

On May 16, 2007, United States Steel Corporation ("U. S. Steel") executed and
delivered an underwriting agreement with J.P. Morgan Securities Inc. and Morgan
Stanley & Co. Incorporated on behalf of themselves and the other underwriters
relating to the issuance and sale of (a) $300,000,000 principal amount of its
5.65% Senior Notes due 2013, (b) $450,000,000 principal amount of its 6.05%
Senior Notes due 2017 and (c) $350,000,000 principal amount of its 6.65% Senior
Notes due 2037 (collectively, the "New Senior Notes").  The New Senior Notes are
senior unsecured obligations of U. S. Steel.  Copies of the underwriting
agreement and the press release announcing the pricing are filed herewith as
Exhibits 1 and 99.1 respectively.

Item 9.01. Financial Statements and Exhibits

     (d)  Exhibits

          1   Underwriting agreement dated May 16, 2007

         99.1 Press release titled "U. S. Steel Prices $1.1 Billion Senior
              Unsecured Notes"

         99.2 Press release titled "U. S. Steel Announces Redemption of
              9.75% Senior Notes due 2010.


     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 hereunto duly authorized.


By   /s/ Gretchen R. Haggerty
     Gretchen R. Haggerty
     Executive Vice President
     & Chief Financial Officer

Dated:  May 21, 2007