Exhibit 3.1



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| |  |  |  | -----------------------------
| |  |  |  | State of Delaware            
| |  |  |  | Secretary of State           
| |  |  |  | Division of Corporations     
| |  |  |  | Delivered 01:54 PM 10/19/2007
| |  |  |  | FILED 01:49 PM 10/19/2007    
| |  |  |  | SRV 071134720 - 2084720 FILE 

AMENDED AND RESTATED

CERTIFICATE OF INCORPORATION

OF

RYERSON INC.

The undersigned corporation, organized and existing under and by virtue of the General Corporation Law of the State of Delaware does hereby
certify:

1. That Eva M. Kalawski is the duty elected and acting Vice President and Secretary of Ryerson Inc., a Delaware
corporation (the Corporation), and the date of filing of the Corporations original Certificate of Incorporation was February 28, 1986 under the name Inland Steel Industries, Inc.

2. That the Amended and Restated Certificate of Incorporation or the Corporation set forth below has been duly adopted in accordance with
Sections 228, 242 and 245 of the Delaware General Corporation Law. Pursuant to Section 228 of the Delaware General Corporation Law, the stockholders have unanimously approved this Amended and Restated Certificate of Incorporation.

3. That the Certificate & Incorporation of the Corporation shall be amended and restated to read in its entirety as follows:

FIRST: The name of the corporation is Ryerson Inc. (the Corporation).

SECOND: The address of the registered office or the Corporation in the State of Delaware is 1209 Orange Street, in the City
of Wilmington, County of New Castle, Delaware 19801. The name of the Corporations registered agent at such address is The Corporation Trust Company.

THIRD: The purpose of the Corporation is to engage in any lawful act or activity for which a corporation may now or hereafter be organized under the General Corporation Law of the State of Delaware as set
forth in Title 8 of the Delaware Code.

FOURTH: The total number of shares of stock which the Corporation shall
have authority to issue is one thousand (1,000), consisting of one thousand (1,000) shares of common stock, $0.01 par value per share.

FIFTH: The business and affairs of the Corporation shall be managed by and under the direction of the Board of Directors. The exact number of directors of the Corporation shall be fixed by or in the
manner provided in the Bylaws of the Corporation (the Bylaws).

SIXTH: In furtherance and not in
limitation of the powers conferred by statute, the Board of Directors is expressly authorized:

(a) to adopt,
repeal, rescind, alter or amend in any respect the Bylaws, and to confer in the Bylaws powers and authorities upon the directors of the Corporation in addition to the powers and authorities expressly conferred upon them by statute;

(b) from time to time to set apart out of any funds or assets of the Corporation available for dividends an amount or
amounts to be reserved as working capital or for any other lawful purpose and to abolish any reserve so created and to determine whether any, and, if any, what part, of the surplus of the Corporation or its net profits applicable to dividends shall
be declared in dividends and paid to its stockholders, and all rights of the holders of stock of the Corporation in respect of dividends shall be subject to the power of the Board of Directors so to do;

(c) subject to the laws of the State of Delaware, from time to time to sell, lease or otherwise dispose of any part or parts
of the properties of the Corporation and to cease to conduct the business connected therewith or again to resume the same, as it may deem best, and



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(d) in addition to the powers and authorities hereinbefore and by the laws
of the State of Delaware conferred upon the Board of Directors, to execute all such powers and to do all acts and things as may be exercised or done by the Corporation; subject, nevertheless, to the express provisions of said laws, of the
Certificate of incorporation of the Corporation and its Bylaws.

SEVENTH: Meetings of stockholders of the
Corporation may be held within or without the State of Delaware, as the Bylaws provide. The books of Corporation may be kept (subject to any provision of applicable law) outside the State of Delaware at such place or places as may be designated from
time to time by the Board or in the Bylaws.

EIGHTH: The Corporation reserves the right to adopt, repeal,
rescind, alter or amend in any respect any provision contained in this Certificate of Incorporation in the manner now or hereafter prescribed by applicable law, and all rights conferred on stockholders herein are granted subject to this reservation.

NINTH: The Corporation is to have perpetual existence.

TENTH: A director of this Corporation shall not be personally liable to the Corporation or its stockholders for monetary
damages for breach of fiduciary duty as a director, except for liability (i) for any breach of the directors duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional
misconduct or a knowing violation of law, (iii) under the Section 174 of the Delaware General Corporation Law, as the same exists or hereafter may be amended, or (iv) for any transaction for which the director derived an improper personal
benefit. If the Delaware General Corporation Law hereafter is amended to authorize the further elimination or limitation of the liability of directors, then the liability of a director of the Corporation, in addition to the limitation on personal
liability provided herein, shall be limited to the fullest extent permitted by the amended Delaware Corporation Law. No amendment to or repeal of this Article Tenth shall apply to or have any effect on the liability or alleged liability of any
director of the Corporation for or with respect to any acts or omissions of such director occurring prior to such amendment or appeal.

ELEVENTH: The Corporation shall, to the fullest extent permitted by the provisions of Section 145 of the General Corporation Law of the State of Delaware, as the same may be amended and supplemented,
indemnify any and all persons whom it shall have power to indemnify under said section from and against any and all of the expenses, liabilities, or other matters referred to in or covered by said section, and the indemnification provided for herein
shall not be deemed exclusive of any other rights to which those indemnified led may be entitled under any Bylaw, agreement, vote of stockholders or disinterested directors or otherwise, both as to action in his official capacity and as to action in
another capacity while holding such office, and shall continue as to a person who has ceased to be a director, officer, employee, or agent and shall inure to the benefit of the heirs, executors, aid administrators of such a person.

IN WITNESS WHEREOF, the Corporation has caused this Amended and Restated Certificate of Incorporation to be signed this
19thday of October, 2007.



/s/ Eva M. KalawskiEva M. KalawskiVice President and Secretary




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