Exhibit 4.1

RHC NUMBER Ryerson Holding Corporation INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE NUMBER SHARES SEE REVERSE FOR CERTAIN DEFINITIONS CUSIP THIS CERTIFIES THAT is the owner of FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK OF $0.01 PAR VALUE OF Ryerson Holding Corporation transferable on the books of the Corporation by the holder hereof in person or by duly authorized attorney upon surrender of this Certificate properly endorsed. This Certificate is not valid unless countersigned and registered by the Transfer Agent and Registrar. WITNESSS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers. Dated: CHIEF FINANCIAL OFFICER CHIEF EXECUTIVE OFFICER AND PRESIDENT COUNTERSIGNED AND REGISTERED: AMERICAN BANK NOTE COMPANY. AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC (New York, NY) TRANSFER AGENT AND REGISTRAR BY AUTHORIZED SIGNATURE ABNOTETM 711 ARMSTRONG LANE, COLUMBIA, TN 38401 (931) 388-3003 North America PRODUCTION COORDINATOR: HOLLY GRONER 931-490-7660 PROOF OF APRIL 26, 2010 RYERSON HOLDING CORPORATION TSB 1527 FC Operator: JB REVISION: NEW COLORS SELECTED FOR PRINTING: Intaglio prints in SC-15 Maroon. COLOR: This proof was printed from a digital file or artwork on a graphics quality, color laser printer. It is a good representation of the color as it will appear on the final product. However, it is not an exact color rendition, and the final printed product may appear slightly different from the proof due to the difference between the dyes and printing link. PLEASE INITIAL THE APPROPRIATE SELECTION FOR THIS PROOF: OK AS IS OK WITH CHANGES MAKE CHANGES AND SEND ANOTHER PROOF

The following abbreviations, when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to applicable laws or regulations: TEN COM – as tenants in common UNIF GIFT MIN ACT – Custodian TEN ENT – as tenants by the entireties (Cust) (Minor) JT TEN – as joint tenants with right of survivorship and not as tenants in common Under Uniform Gifts to Minors Act (State) Additional abbreviations may also be used though not in the above list. For value received, hereby sell, assign and transfer unto PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF ASSIGNEE PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF ASSIGNEE Shares of the common stock represented by the within Certificate, and do hereby irrevocably constitute and appoint Attorney to transfer the said stock on the books of the within-named Corporation with full power of substitution in the premises. Dated, NOTICE: THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFCATE, IN EVERY PARTICULAR WITHOUT ALTERATION OR ENLARGEMENT, OR ANY CHANGE WHATEVER. SIGNATURE(S) GUARANTEED: THE SIGNATURE(S) MUST BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15. ABnoteTM North America 711 ARMSTRONG LANE, COLUMBIA, TN 38401 (931) 388-3003 PRODUCTION COORDINATOR HOLLY GRONER 931-490-7660 PROOF OF APRIL 26, 2010 RYERSION HOLDING CORPORATION TSB 1527 BK Operator: JB REVISION: NEW PLEASE INITIAL THE APPROPRIATE SELECTION FOR THIS PROOF: OK AS IS OK WITH CHANGES MAKE CHANGES AND SEND ANOTHER PROOF