Exhibit 99.4 Offer to Exchange up to $110,000,000 of its 11 1/2% Series B First Mortgage Notes Due 2005 for any and all of its outstanding 11 1/2% Series A First Mortgage Notes Due 2005 of SHEFFIELD STEEL CORPORATION - -------------------------------------------------------------------------------- THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME ON __________, 1998 (THE "INITIAL EXPIRATION DATE"), UNLESS EXTENDED. - -------------------------------------------------------------------------------- To Our Clients: Enclosed for your consideration is a Prospectus, dated ____________, 1998 (as the same may be amended from time to time, the "Prospectus"), and a Letter of Transmittal (the "Letter of Transmittal") relating the offer by Sheffield Steel Corporation (the "Company") to exchange (the "Exchange Offer") its 11 1/2% Series B First Mortgage Notes due 2005 (the "New First Mortgage Notes") for an equal principal amount of its 11 1/2% Series A First Mortgage Notes due 2005 (the "Old First Mortgage Notes") upon the terms and conditions set forth in the Prospectus and in the related Letter of Transmittal. As set forth in the Prospectus, the terms of the New First Mortgage Notes are identical in all material respects to the Old First Mortgage Notes, except for certain transfer restrictions relating to the Old First Mortgage Notes and except that the New First Mortgage Notes will not contain certain provisions relating to an increase in the interest rate which were included in the Old First Mortgage Notes under certain circumstances relating to the timing of the Exchange Offer. The Exchange Offer is subject to certain customary conditions. See "The Exchange Offer" in the Prospectus. The Old First Mortgage Notes may be tendered only in integral multiples of $1,000. The material is being forwarded to you as the beneficial owner of Old First Mortgage Notes carried by us for your account or benefit but not registered in your name. An exchange of any Old First Mortgage Notes may only be made by us as the registered Holder and pursuant to your instructions. Therefore, the Company urges beneficial owners of Old First Mortgage Notes registered in the name of a broker, dealer, commercial bank, trust company or other nominee to contact such Holder promptly if they wish to exchange Old First Mortgage Notes in the Exchange Offer. Accordingly, we request instructions as to whether you wish us to exchange any or all such Old First Mortgage Notes held by us for your account or benefit, pursuant to the terms and conditions set forth in the Prospectus and Letter of Transmittal. We urge you to read carefully the Prospectus and Letter of Transmittal before instructing us to exchange your Old First Mortgage Notes. Your instructions to us should be forwarded as promptly as possible in order to permit us to exchange Old First Mortgage Notes on your behalf in accordance with the provisions of the Exchange Offer. THE EXCHANGE OFFER EXPIRES AT 5:00 P.M., NEW YORK CITY TIME, ON _____________, 1998, UNLESS EXTENDED. With respect to the Exchange Offer, "Expiration Date" means the Initial Expiration Date, or if the Exchange Offer is extended, the latest time and date to which the Exchange Offer is so extended by the Company. Tender of Old First Mortgage Notes may be withdrawn at any time prior to 5:00 p.m., New York City time, on the Expiration Date. Your attention is directed to the following: 1. The Exchange Offer is for the exchange of $1,000 principal amount of the New First Mortgage Notes for each $1,000 principal amount of the Old First Mortgage Notes, of which $110,000,000 aggregate principal amount of the Old First Mortgage Notes was outstanding as of ______________, 1998. The terms of the New First Mortgage Notes are identical in all material respects to the Old First Mortgage Notes, except for certain transfer restrictions relating to the Old First Mortgage Notes and except that the New First Mortgage Notes will not contain certain provisions relating to an increase in the interest rate which were included in the Old First Mortgage Notes under certain circumstances relating to the timing of the Exchange Offer. 2. THE EXCHANGE OFFER IS SUBJECT TO CERTAIN CONDITIONS. SEE "THE EXCHANGE OFFER - CONDITIONS" IN THE PROSPECTUS. 3. The Exchange Offer and withdrawal rights will expire at 5:00 p.m., New York City time, on ___________, 1998, unless extended. 4. The Company has agreed to pay the expenses of the Exchange Offer. 5. Any transfer taxes incident to the transfer of Old First Mortgage Notes from the tendering Holder to the Company will be paid by the Company, except as provided in the Prospectus and the Letter of Transmittal. The Exchange Offer is not being made to, nor will exchanges be accepted from or on behalf of, holders of Old First Mortgage Notes residing in any jurisdiction in which the making of the Exchange Offer or acceptance thereof would not be in compliance with the laws of such jurisdiction. If you wish us to exchange any or all of your Old First Mortgage Notes held by us for your account or benefit, please so instruct us by completing, executing and returning to us the instruction form that appears below. THE ACCOMPANYING LETTER OF TRANSMITTAL IS FURNISHED TO YOU FOR INFORMATIONAL PURPOSES ONLY AND MAY NOT BE USED BY YOU TO EXCHANGE OLD FIRST MORTGAGE NOTES HELD BY US AND REGISTERED IN OUR NAME FOR YOUR ACCOUNT OR BENEFIT. 2 INSTRUCTIONS The undersigned acknowledge(s) receipt of your letter and the enclosed material referred to therein relating to the Exchange Offer of Sheffield Steel Corporation. This will instruct you to exchange the aggregate principal amount of Old First Mortgage Notes indicated below (or, if no aggregate principal amount is indicated below, all Old First Mortgage Notes) held by you for the account or benefit of the undersigned, pursuant to the terms of and conditions set forth in the Prospectus and the Letter of Transmittal. - -------------------------------------------------------------------------------- AGGREGATE PRINCIPAL AMOUNT OF OLD FIRST MORTGAGE NOTES TO BE EXCHANGED $ * - -------------------------------------------------------------------------------- * I (we) understand that if I (we) --------------------------------------- sign these instruction forms --------------------------------------- without indicating an aggregate Signature(s) principal amount of Old First Mortgage Notes in the space above, --------------------------------------- all Old First Mortgage Notes held --------------------------------------- by you for my (our) account will --------------------------------------- be exchanged. --------------------------------------- (Please print name(s) and address here) Dated: , 1998 --------------------------- --------------------------------------- (Area Code and Telephone Number) --------------------------------------- (Taxpayer Identification and Social Security Number) - --------------------- * Unless otherwise indicated, it will be assumed that all of your Old First Mortgage Notes are to be exchanged. 3