POSASR

As filed with the Securities and Exchange Commission on November 13, 2012

Registration No. 333- 166303

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Post-effective Amendment No. 1

to

FORM S-3

REGISTRATION STATEMENT

under

THE SECURITIES ACT OF 1933

AK STEEL HOLDING CORPORATION	AK STEEL CORPORATION
(Exact name of registrant as specified in its charter)	(Exact name of registrant as specified in its charter)
Delaware	Delaware
(State or other jurisdiction of incorporation or organization)	(State or other jurisdiction of incorporation or organization)
31-1401455	31-1267098
(I.R.S. Employer Identification Number)	(I.R.S. Employer Identification Number)
9227 Centre Pointe Drive West Chester, Ohio 45069 (513) 425-5000	9227 Centre Pointe Drive West Chester, Ohio 45069 (513) 425-5000
(Address, including zip code, and telephone number, including area code, of registrants’ principal executive offices)	(Address, including zip code, and telephone number, including area code, of registrants’ principal executive offices)

David C. Horn

Executive Vice President, General Counsel and Secretary

AK Steel Holding Corporation

9227 Centre Pointe Drive

West Chester, Ohio 45069

(513) 425-5000

(Name, address, including zip code, and telephone number,

including area code, of agent for service)

Copies to:

Joseph C. Alter

Corporate Counsel and Chief Compliance Officer

AK Steel Holding Corporation

9227 Centre Pointe Drive

West Chester, Ohio

(513) 425-5000

Todd R. Chandler

Weil, Gotshal & Manges LLP

767 Fifth Avenue

New York, New York 10153

(212) 310-8000

Approximate date of commencement of proposed sale to the public: From time to time after the effective date of this Registration Statement as determined by the Registrants.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box.  ¨

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box.  x

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box.  x

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities to be Registered	Amount to be Registered	Proposed Maximum Offering Price Per Unit	Proposed Maximum Aggregate Offering Price	Amount of Registration Fee
Debt Securities	(1)	(1)	(1)	(1)
Common Stock, par value $0.01 per share	(1)	(1)	(1)	(1)
Guarantees	(2)	(2)	(2)	(2)

(1) An indeterminate aggregate offering price and number or amount of securities of each identified class is being registered as may from time to time be offered and sold at indeterminate prices. Separate consideration may or may not be received for securities that are issuable on exercise, conversion or exchange of other securities. In accordance with Rules 456(b) and 457(r) under the Securities Act of 1933 (the “Securities Act”), the registrant is deferring payment of all of the registration fee.

(2) Pursuant to Rule 457(n) under the Securities Act, no separate registration fee is due for guarantees.

EXPLANATORY NOTE

This Post-Effective Amendment No. 1 to the Registration Statement on Form S-3 (Registration No. 333-166303) is being filed for the purpose of (i) registering the common stock of AK Steel Holding Corporation as an additional class of securities that may be offered pursuant to the Registration Statement, including any common stock issuable upon conversion, exchange or exercise of debt securities of AK Steel Corporation that may be offered pursuant to this Registration Statement and (ii) filing additional, related exhibits to the Registration Statement. Other than certain updates related to the passage of time and the changes noted above, no changes or additions are being made hereby to the prospectus which forms a part of the Registration Statement. A description of the class of common stock being registered hereunder will be provided through a prospectus supplement filed pursuant to Rule 424(b) that will be deemed part of and included in the Registration Statement and prospectus that is part of the Registration Statement. This Post-Effective Amendment No. 1 shall become effective immediately upon filing with the Securities and Exchange Commission.

PROSPECTUS

AK STEEL CORPORATION

DEBT SECURITIES

AK STEEL HOLDING CORPORATION

COMMON STOCK

GUARANTEES

AK Steel Corporation (“AK Steel”) may from time to time offer to sell its debt securities, which will be fully and unconditionally guaranteed by AK Steel Holding Corporation (“AK Holding”), the parent of AK Steel. Such debt securities may be convertible or exchangeable for or exercisable into shares of common stock of AK Holding.

AK Holding may from time to time offer to sell shares of its common stock. AK Holding’s common stock is listed on the New York Stock Exchange and trades under the ticker symbol “AKS.”

AK Steel and AK Holding may offer and sell these securities to or through one or more underwriters, dealers and agents, or directly to purchasers, on a continuous or delayed basis. AK Steel and AK Holding will provide the specific plan of distribution for any securities to be offered in supplements to this prospectus. AK Steel and AK Holding will provide specific terms of any securities to be offered in supplements to this prospectus. You should read this prospectus and the applicable prospectus supplement carefully before you invest.

The principal executive offices of the registrants are located at 9227 Centre Pointe Drive, West Chester, Ohio, 45069, and their telephone number at that address is (513) 425-5000.

Investing in the securities involves risks. See “Risk Factors” on page 2 of this prospectus, in any applicable prospectus supplement and in the documents incorporated by reference in this prospectus or any applicable prospectus supplement to read about factors you should consider before investing in the securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

This prospectus may not be used to sell securities unless accompanied by a prospectus supplement that contains a description of those securities.

The date of this prospectus is November 13, 2012

TABLE OF CONTENTS

	Page
ABOUT THIS PROSPECTUS		1
WHERE YOU CAN FIND MORE INFORMATION		1
INCORPORATION BY REFERENCE		2
BUSINESS		2
RISK FACTORS		2
FORWARD-LOOKING STATEMENTS		3
USE OF PROCEEDS		4
DESCRIPTION OF SECURITIES		4
PLAN OF DISTRIBUTION		4
LEGAL MATTERS		4
EXPERTS		4

ABOUT THIS PROSPECTUS

This prospectus is part of an automatic shelf registration statement on Form S-3 that we have filed with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933 (the “Securities Act”). By using a shelf registration statement, we may sell, at any time and from time to time, in one or more offerings, the securities described in this prospectus. As allowed by the SEC rules, this prospectus does not contain all of the information included in the registration statement. For further information, we refer you to the registration statement, including its exhibits. Statements contained in this prospectus about the provisions or contents of any agreement or other document are not necessarily complete. If the SEC’s rules and regulations require that an agreement or document be filed as an exhibit to the registration statement, please see that agreement or document for a complete description of these matters.

You should read this prospectus, any prospectus supplement and any free writing prospectus together with any additional information you may need to make your investment decision. You should also read and carefully consider the information in the documents we have referred you to in “Where You Can Find More Information” below. Information incorporated by reference after the date of this prospectus is considered a part of this prospectus and may add, update or change information contained in this prospectus. Any information in such subsequent filings that is inconsistent with this prospectus will supersede the information in this prospectus, any earlier prospectus supplement.

You should rely only on the information incorporated by reference or provided in this prospectus, any prospectus supplement and any free writing prospectus. We have not authorized anyone else to provide you with other information. We are not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information in this prospectus, any prospectus supplement, any free writing prospectus or any document incorporated herein by reference is accurate as of any date other than the date of the applicable document. Our business, financial condition, results of operations and prospects may have changed since that date.

Unless otherwise stated, or the context otherwise requires, references in this prospectus to “we,” “us” and “our” are to AK Holding and its consolidated subsidiaries, including AK Steel.

WHERE YOU CAN FIND MORE INFORMATION

AK Holding is subject to the informational requirements of the Securities Exchange Act of 1934 (the “Exchange Act”) and, in accordance with these requirements, AK Holding files reports and other information relating to its business, financial condition and other matters with the SEC. AK Holding is required to disclose in such reports certain information, as of particular dates, concerning its operating results and financial condition, officers and directors, principal holders of shares, any material interests of such persons in transactions with us and other matters. AK Holding’s filed reports, proxy statements and other information can be inspected and copied at the public reference room maintained by the SEC at 100 F Street, N.E., Washington, D.C. 20549. You may obtain information on the operation of the public reference room by calling the SEC at 1-800-SEC-0330.

The SEC also maintains a website that contains reports and other information regarding registrants that file electronically with the SEC. The address of such site is: www.sec.gov. Reports, proxy statements and other information concerning AK Holding’s business may also be inspected at the offices of the New York Stock Exchange at 20 Broad Street, New York, NY 10005.

Our Internet website is www.aksteel.com. We make available free of charge on our website AK Holding’s Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, reports filed pursuant to Section 16 and amendments to those reports as soon as reasonably practicable after such materials are electronically filed or furnished to the SEC. Other than any documents expressly incorporated by reference, the information on our website and any other website that is referred to in this prospectus is not part of this prospectus.

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INCORPORATION BY REFERENCE

The SEC allows us to “incorporate by reference” information into this prospectus, which means that we can disclose important information to you by referring to that information. We hereby “incorporate by reference” the documents listed below. The information that we file later with the SEC will automatically update and in some cases supersede the information in this prospectus and the documents listed below.

• AK Holding’s Annual Report on Form 10-K for the fiscal year ended December 31, 2011, including portions of AK Holding’s Schedule 14A filed on April 9, 2012, incorporated by reference therein;

• AK Holding’s Quarterly Reports on Form 10-Q for the fiscal quarters ended March 31, 2012, June 30, 2012 and September 30, 2012;

• AK Holding’s Current Reports on Form 8-K filed on February 7, 2012, March 14, 2012, March 22, 2012, May 25, 2012 (only with respect to Items 5.02 and 5.07), October 5, 2012, as amended by an amendment on Form 8-K/A filed on October 22, 2012, and November 13, 2012 (only with respect to Item 8.01); and

• future filings made by AK Holding and AK Steel with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus; provided that this prospectus will not incorporate any information that we may furnish to the SEC under Item 2.02 or Item 7.01 unless specifically provided in such Form 8-K.

Upon your oral or written request, we will provide you with a copy of any of these filings at no cost. Requests should be directed to Secretary, AK Steel Holding Corporation, 9227 Centre Pointe Drive, West Chester, Ohio 45069, Telephone No. (513) 425-5000.

BUSINESS

We are an integrated producer of flat-rolled carbon, stainless and electrical steels and tubular products, with seven steelmaking and finishing plants located in Indiana, Kentucky, Ohio and Pennsylvania. We produce value-added carbon steels (premium-quality coated and cold-rolled) and hot-rolled carbon steel products for the automotive, infrastructure and manufacturing, and distributors and converters markets. Our stainless steel products are sold in sheet and strip form primarily to customers in the automotive industry, as well as to manufacturers of food handling, chemical processing, pollution control, medical and health equipment, and to distributors and service centers. Our electrical steels, which are iron-silicon alloys with unique magnetic properties, are sold primarily to manufacturers of power transmission and distribution transformers. Our tubular products business line, known as AK Tube, consists of finished flat-rolled carbon and stainless steel that is welded into tubing, which is used primarily in the automotive, large truck, industrial and construction markets. In addition, our operations include European trading companies which buy and sell steel and steel products and other materials.

During 2011, we entered into a joint venture (“Magnetation”) whereby we acquired a 49.9% equity interest in Magnetation LLC, a company headquartered in Minnesota that produces iron ore concentrate from previously-mined ore reserves. In addition, we purchased a private company headquartered in Pennsylvania that we renamed AK Coal Resources, Inc. (“AK Coal”), which controls and is developing metallurgical coal reserves. These investments will supply approximately 50% of our annual iron ore and coal needs and are intended to provide a financial hedge against global market price increases and to enable us to acquire key raw materials at a substantial discount to the market price. Although the full benefit of these investments will likely not be realized until 2015 or later, we will start to see some of the benefits in 2013.

The registered and principal executive offices of AK Holding and AK Steel are located at 9227 Centre Pointe Drive, West Chester, Ohio 45069, and their telephone number at that address is (513) 425-5000.

RISK FACTORS

Investing in our securities involves risks. Before deciding to purchase any of our securities, you should carefully consider the discussion of risks and uncertainties under “Item 1A—Risk Factors” in AK Holding’s Annual Report on Form 10-K for the fiscal year ended December 31, 2011 and Quarterly Report on Form 10-Q

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for the fiscal quarter ended June 30, 2012, each of which is incorporated by reference in this prospectus, and under similar headings in AK Holding’s subsequently filed quarterly reports on Form 10-Q and annual reports on Form 10-K, as well as the other risks and uncertainties described in any other documents incorporated by reference in this prospectus or in any applicable prospectus supplement or free writing prospectus. See the section entitled “Where You Can Find More Information” in this prospectus. The risks and uncertainties discussed in the documents incorporated by reference in this prospectus are those we currently believe may materially affect us. Additional risks and uncertainties not presently known to us or that we currently believe are immaterial also may materially and adversely affect our business, financial condition and results of operations.

FORWARD-LOOKING STATEMENTS

We have made forward-looking statements in this prospectus and the documents incorporated by reference herein that are based on our management’s beliefs and assumptions and on information available to our management at the time such statements were made. Forward-looking statements include information concerning our possible or assumed future results of operations, business strategies, financing plans, competitive position, potential growth opportunities, potential operating performance improvements, the effects of competition and the effects of future legislation or regulations. Forward-looking statements include all statements that are not historical facts and can be identified by the use of forward-looking terminology such as the words “believe,” “expect,” “plan,” “intend,” “anticipate,” “estimate,” “predict,” “potential,” “continue,” “may,” “should” or the negative of these terms or similar expressions.

Forward-looking statements involve risks, uncertainties and assumptions. Actual results may differ materially from those expressed in these forward-looking statements. You should not put undue reliance on any forward-looking statements. Factors that could cause our actual results to differ materially from the results contemplated by such forward-looking statements include:

• reduced selling prices and shipments associated with a highly competitive, cyclical industry and weakened economies;

• changes in the cost of raw materials and energy;

• severe financial hardship or bankruptcy of one or more of our major customers;

• reduced demand in key product markets;

• competitive pressure from increased global steel production and imports;

• excess inventory of raw materials;

• issues with respect to our supply of raw materials, including disruptions or quality issues;

• disruptions to production or reduced production levels;

• our healthcare and pension obligations and related laws and regulations, which could include the recognition of a corridor charge with respect to our pension and other postretirement benefit plans;

• not timely reaching new labor agreements;

• major litigation, arbitrations, environmental issues and other contingencies;

• costs associated with environmental compliance;

• regulatory compliance and changes;

• climate change and greenhouse gas emission limitations and regulations;

• financial, credit, capital or banking markets;

• the value of our net deferred tax assets;

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• lower quantities or quality of estimated coal reserves of AK Coal;

• increased governmental regulation of mining activities; and

• inability to hire or retain skilled labor and experienced manufacturing and mining managers.

The risk factors discussed under “Risk Factors” in this prospectus, under “Item 1A.—Risk Factors” in AK Holding’s Annual Report on Form 10-K for the year ended December 31, 2011 and Quarterly Report on Form 10-Q for the quarter ended June 30, 2012 and under similar headings in AK Holding’s subsequently filed quarterly reports on Form 10-Q and annual reports on Form 10-K, as well as the other risks and uncertainties described in the other documents incorporated by reference into this prospectus or in any applicable prospectus supplement, could cause our results to differ materially from those expressed in forward-looking statements. There may be other risks and uncertainties that we are unable to predict at this time or that we currently do not expect to have a material adverse effect on our business. We expressly disclaim any obligation to update our forward-looking statements other than as required by law.

USE OF PROCEEDS

Unless otherwise stated in the prospectus supplement accompanying this prospectus or any applicable free writing prospectus, we will use the net proceeds from the sale of any debt securities or common stock that may be offered hereby for general corporate purposes. Such general corporate purposes may include, but are not limited to, reducing or refinancing our indebtedness or the indebtedness of our subsidiaries, financing possible acquisitions and redeeming outstanding securities. The prospectus supplement relating to an offering will contain a more detailed description of the use of proceeds of any specific offering of securities.

DESCRIPTION OF SECURITIES

We will set forth in the applicable prospectus supplement a description of the debt securities, common stock or guarantees that may be offered under this prospectus.

PLAN OF DISTRIBUTION

We may offer and sell these securities to or through one or more underwriters, dealers and agents, or directly to purchasers, on a continuous or delayed basis. We will provide the specific plan of distribution for any securities to be offered in supplements to this prospectus.

LEGAL MATTERS

Unless otherwise indicated in the applicable prospectus supplement, Weil, Gotshal & Manges LLP, New York, New York, will pass upon the validity of the debt securities on behalf of AK Steel and the guarantees and common stock on behalf of AK Holding.

EXPERTS

The consolidated financial statements incorporated in the prospectus by reference from AK Holding’s Annual Report on Form 10-K and the effectiveness of AK Holding’s internal control over financial reporting, have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference (which reports express an unqualified opinion on the consolidated financial statements and includes an explanatory paragraph referring to the change in method of presenting comprehensive income in 2011 and express an unqualified opinion on the effectiveness of internal control over financial reporting). Such financial statements have been incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

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PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution

The following statement sets forth the expenses of AK Steel Holding Corporation (“AK Holding”) and AK Steel Corporation (“AK Steel” and together with AK Holding, the “Registrants”) in connection with the offering described in this Registration Statement (all of which will be borne by the Registrants). All amounts shown are estimated.

SEC registration fee	$	*
Printing expenses		+
Legal fees and expenses		+
Audit fees and expenses		+
Miscellaneous expenses		+
Trustee fees and expenses		+
Total	$

* In accordance with Rules 456(b) and 457(r), the Registrants are deferring payment of the registration fee for the securities offered by this prospectus.

+ Estimated expenses are not presently known.

The foregoing sets forth the general categories of expenses (other than underwriting discounts and commissions) that the Registrants anticipate they will incur in connection with the offering of securities under this registration statement. Information regarding estimated expenses of issuance and distribution of each identified class of securities being registered will be provided at the time information as to such class is included in a prospectus supplement in accordance with Rule 430B.

Item 15. Indemnification of Directors and Officers

AK Steel Corporation

AK Steel Holding Corporation

AK Holding and AK Steel are each Delaware corporations. Subsection (b)(7) of Section 102 of the Delaware General Corporation Law (the “DGCL”), enables a corporation in its original certificate of incorporation or an amendment thereto to eliminate or limit the personal liability of a director to the corporation or its stockholders for monetary damages for violations of the director’s fiduciary duty, except (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) pursuant to Section 174 of the DGCL (providing for liability of directors for unlawful payment of dividends or unlawful stock purchases or redemptions) or (iv) for any transaction from which a director derived an improper personal benefit. The Certificate of Incorporation of each of AK Holding and AK Steel has eliminated the personal liability of its directors to the fullest extent permitted by law.

Subsection (a) of Section 145 of the DGCL empowers a corporation to indemnify any director or officer, or former director or officer, who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative (other than an action by or in the right of the corporation) by reason of the fact that such person is or was a director or officer of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses (including attorneys’ fees), judgments, fines and amounts paid in settlement actually and reasonably incurred in connection with such

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action, suit or proceeding provided that such director or officer acted in good faith in a manner reasonably believed to be in, or not opposed to, the best interests of the corporation, and, with respect to any criminal action or proceeding, provided further that such director or officer had no reasonable cause to believe his conduct was unlawful.

Subsection (b) of Section 145 empowers a corporation to indemnify any current or former director, officer, employee or agent of the corporation, who was or is a party or is threatened to be made a party to any threatened, pending or completed action or suit by or in the right of the corporation to procure a judgment in its favor by reason of the fact that such person acted in any of the capacities set forth above, against expenses (including attorneys’ fees) actually and reasonably incurred in connection with the defense or settlement of such action or suit provided that such director or officer acted in good faith and in a manner he reasonably believed to be in, or not opposed to, the best interests of the corporation, except that no indemnification may be made in respect of any claim, issue or matter as to which such director or officer shall have been adjudged to be liable to the corporation unless and only to the extent that the Court of Chancery or the court in which such action or suit was brought shall determine upon application that, despite the adjudication of liability but in view of all of the circumstances of the case, such director or officer is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court shall deem proper.

Section 145 further provides that to the extent a director or officer of a corporation has been successful in the defense of any action, suit or proceeding referred to in subsections (a) or (b) or in the defense of any claim, issue or matter therein, he or she shall be indemnified against expenses (including attorneys’ fees) actually and reasonably incurred by him in connection therewith; that indemnification and advancement of expenses provided by, or granted pursuant to, Section 145 shall not be deemed exclusive of any other rights to which the indemnified party may be entitled; and empowers the corporation to purchase and maintain insurance on behalf of any person who is or was a director, officer, employee or agent of the corporation, or is or was serving at the request of the corporation as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise against any liability asserted against him or incurred by him in any such capacity, or arising out of his status as such, whether or not the corporation would have the power to indemnify him against such liabilities under Section 145.

Article Seventh of the Certificate of Incorporation of AK Holding and Article Seven of the Certificate of Incorporation of AK Steel each state that the corporation shall indemnify any person who was or is a party or is threatened to be made a party to, or testifies in, any threatened, pending, or completed action, suit or proceeding, whether civil, criminal, administrative or investigative in nature, by reason of the fact that such person is or was a director, officer or employee of the corporation, or is or was serving at the request of the corporation as a director, officer or employee of another corporation, partnership, joint venture, employee benefit plan, trust or other enterprise, against expenses (including attorneys’ fees), judgments, fines, penalties, amounts paid in settlement and other liabilitiies actually and reasonably incurred by such person in connection with such action, suit or proceeding to the fullest extent permitted by law, and the corporation may adopt by-laws or enter into agreements with any such person for the purpose of providing such indemnification.

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Item 16. Exhibits

Exhibit Number	Description
1.1	Form of Underwriting Agreement.**
3.1	Certificate of Incorporation of AK Steel Holding Corporation and the Amendments and Corrections thereto (incorporated herein by reference to Exhibit 3.1 to AK Steel Holding Corporation’s Registration Statement on Form S-1, as filed with the Commission on January 26, 1994).*
3.2	Certificate of Amendment of the Certificate of Incorporation of AK Steel Holding Corporation (incorporated herein by reference to Exhibit 3.1.1 to AK Steel Holding Corporation’s Current Report on Form 8-K, as filed with the Commission on May 28, 1998).*
4.1	Indenture, dated as of April 26, 2010, among AK Steel Corporation, AK Steel Holding Corporation, as guarantor, and U.S. Bank, National Association, as trustee.*
4.2	Form of Certificate of Common Stock+
5.1	Opinion of Weil, Gotshal & Manges LLP.*
5.2	Opinion of Weil, Gotshal & Manges LLP as to the common stock. +
12.1	Computation of Ratio of Earnings to Combined Fixed Charges.+
23.1	Consent of Weil, Gotshal & Manges LLP (included in Exhibit 5.1).*
23.2	Consent of Weil, Gotshal & Manges LLP (included in Exhibit 5.2 filed herewith).+
23.3	Consent of Deloitte & Touche LLP.+
24.1	Power of Attorney with respect to AK Steel Holding Corporation signatories.*
24.2	Power of Attorney with respect to AK Steel Corporation signatories.*
25.1	Form T-1 Statement of Eligibility of U.S. Bank, National Association.*

(*) Previously filed

(**) To be filed by amendment or as an exhibit to a document filed by AK Holding under the Securities Exchange Act of 1934 and incorporated herein by reference.

(+) Filed herewith.

Item 17. Undertakings

The undersigned Registrants hereby undertake:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in the volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Securities and Exchange Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20% change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement; and

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(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

provided, however, that paragraphs (i), (ii) and (iii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Securities and Exchange Commission by the registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the registration statement, or is contained in a form of prospectus filed pursuant to Rule 424(b) that is part of the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act of 1933, each post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein and the offering of such securities in the post-effective amendment at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(4) That, for the purpose of determining liability under the Securities Act of 1933 to any purchaser:

(i) Each prospectus filed by the registrant pursuant to Rule 424(b)(3) shall be deemed to be part of the registration statement as of the date the filed prospectus was deemed part of and included in the registration statement; and

(ii) Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5), or (b)(7) as part of a registration statement in reliance on Rule 430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii), or (x) for the purpose of providing the information required by Section 10(a) of the Securities Act of 1933 shall be deemed to be part of and included in the registration statement as of the earlier of the date such form of prospectus is first used after effectiveness or the date of the first contract of sale of securities in the offering described in the prospectus. As provided in Rule 430B, for liability purposes of the issuer and any person that is at that date an underwriter, such date shall be deemed to be a new effective date of the registration statement relating to the securities in the registration statement to which that prospectus relates and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof. Provided, however, that no statement made in a registration statement or prospectus that is part of the registration statement or made in a document incorporated or deemed incorporated by reference into the registration statement or prospectus that is part of the registration statement will, as to a purchaser with a time of contract of sale prior to such effective date, supersede or modify any statement that was made in the registration statement or prospectus that was part of the registration statement or made in any such document immediately prior to such effective date;

(5) That, for the purpose of determining liability of the registrant under the Securities Act of 1933 to any purchaser in the initial distribution of the securities, the undersigned Registrants undertake that in a primary offering of securities of the undersigned Registrants pursuant to this registration statement, regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, each of the undersigned Registrants will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser:

(i) Any preliminary prospectus or prospectus of the undersigned Registrants relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned Registrants or used or referred to by the undersigned Registrants;

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(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned Registrants or its securities provided by or on behalf of the undersigned Registrants; and

(iv) Any other communication that is an offer in the offering made by the undersigned Registrants to the purchaser.

(6) That, for purposes of determining any liability under the Securities Act of 1933, each filing of AK Holding’s annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit plan’s annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new registration statement relating to the securities offered therein and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(7) To file an application for the purpose of determining the eligibility of the trustee to act under subsection (a) of Section 310 of the Trust Indenture Act in accordance with the rules and regulations prescribed by the Commission under Section 305(b)(2) of the Act.

(8) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrants pursuant to the foregoing provisions, or otherwise, the Registrants have been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act of 1933 and is, therefore unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by a registrant of expenses incurred or paid by a director, officer or controlling person of such registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrants will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities and Exchange Act and will be governed by the final adjudication of such issue.

II-5

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the undersigned registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on this post-effective amendment to Form S-3 and has duly caused this post-effective amendment to the registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the township of West Chester, State of Ohio, on the 13^th day of November, 2012.

AK STEEL HOLDING CORPORATION
By:	/s/    Roger K. Newport
	Roger K. Newport
	Vice President, Finance and Chief Financial Officer

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities indicated as of November 13, 2012.

Signature	Title
* James L. Wainscott	Chairman of the Board, President, and Chief Executive Officer (Principal Executive Officer)
/s/    Roger K. Newport Roger K. Newport	Vice President, Finance and Chief Financial Officer (Principal Financial Officer)
/s/    Richard S. Williams Richard S. Williams	Controller and Chief Accounting Officer (Principal Accounting Officer)
* Robert H. Jenkins	Lead Director
* Richard A. Abdoo	Director
* John S. Brinzo	Director
* Dennis C. Cuneo	Director
* William K. Gerber	Director
* Dr. Bonnie G. Hill	Director

II-6

* Ralph S. Michael III	Director
* Shirley D. Peterson	Director
* Dr. James A. Thomson	Director

*By:	/s/ David C. Horn
	Name: David C. Horn
	Title: Attorney-in-fact

II-7

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the undersigned registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on this post-effective amendment to Form S-3 and has duly caused this post-effective amendment to the registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the township of West Chester, State of Ohio, on the 13^th day of November, 2012.

AK STEEL CORPORATION
By:	/s/    Roger K. Newport
	Roger K. Newport
	Vice President, Finance and Chief Financial Officer

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities indicated as of November 13, 2012.

Signature	Title
* James L. Wainscott	Chairman of the Board, President, and Chief Executive Officer (Principal Executive Officer)
/s/    Roger K. Newport Roger K. Newport	Vice President, Finance and Chief Financial Officer (Principal Financial Officer)
/s/    Richard S. Williams Richard S. Williams	Controller and Chief Accounting Officer (Principal Accounting Officer)
* Robert H. Jenkins	Lead Director
* Richard A. Abdoo	Director
* John S. Brinzo	Director
* Dennis C. Cuneo	Director
* William K. Gerber	Director
* Dr. Bonnie G. Hill	Director

II-8

* Ralph S. Michael III	Director
* Shirley D. Peterson	Director
* Dr. James A. Thomson	Director

*By:	/s/ David C. Horn
	Name: David C. Horn
	Title: Attorney-in-fact

II-9

EX-4.2

Exhibit 4.2

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		under Uniform Gifts to Minors
		survivorship and not as tenants		Act
		in common		(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 ZIP CODE, OF ASSIGNEE)

shares of the capital 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 CERTIFICATE IN

EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY

CHANGE WHATEVER.

EX-5.2

Exhibit 5.2

767 Fifth Avenue

New York, NY 10153-0119

+1 212 310 8000 tel

+1 212 310 8007 fax

November 13, 2012

AK Steel Holding Corporation

AK Steel Corporation

9227 Centre Pointe Drive

West Chester, OH 45069

Ladies and Gentlemen:

We have acted as counsel to AK Steel Corporation, a Delaware corporation (the “Company”), and AK Steel Holding Corporation, a Delaware corporation (“Parent” and together with the Company, the “Companies”), in connection with the preparation and filing with the Securities and Exchange Commission (the “Commission”) of the Post-Effective Amendment No. 1 (the “Amendment”) to the Registration Statement on Form S-3 (File No. 333-166303) (and together with the Amendment, the “Registration Statement”) under the Securities Act of 1933, as amended (the “Securities Act”), relating to the registration of the offer, issuance and sale from time to time of an indeterminate amount of common stock, par value $0.01 per share, of the Parent (the “Securities”).

In so acting, we have examined originals or copies (certified or otherwise identified to our satisfaction) of (i) the Amended and Restated Certificate of Incorporation of Parent, (ii) the Amended and Restated Bylaws of Parent; (iii) the Registration Statement, (iv) the Prospectus, dated November 13, 2012 (the “Base Prospectus”), which forms a part of the Registration Statement, (v) the form of certificate of common stock of Parent, and (vi) such corporate records, agreements, documents and other instruments, and such certificates or comparable documents of public officials and of officers and representatives of each of the Companies, and have made such inquiries of such officers and representatives, as we have deemed relevant and necessary as a basis for the opinion hereinafter set forth.

In such examination, we have assumed the genuineness of all signatures, the legal capacity of all natural persons, the authenticity of all documents submitted to us as originals, the conformity to original documents of all documents submitted to us as certified, conformed or photostatic copies and the authenticity of the originals of such latter documents. As to all questions of fact material to this opinion that have not been independently established, we have relied upon certificates or comparable documents of officers and representatives of each of the Companies.

Based on and subject to the foregoing and assuming that (i) the Registration Statement and any amendments thereto (including any post-effective amendments) will have become effective and comply with all applicable laws and no stop order suspending the Registration Statement’s effectiveness will have been issued and remain in effect, in each case, at the time the Securities are offered or issued as contemplated in the Registration Statement; (ii) a prospectus supplement will have been prepared and filed with the Commission describing the Securities offered thereby and will at all relevant times comply

AK Steel Holding Corporation AK Steel Corporation November 13, 2012 Page 2

with all applicable laws; (iii) Parent has timely filed all necessary reports pursuant to the Securities Exchange Act of 1934, as amended, which are incorporated into the Registration Statement by reference; (iii) a definitive underwriting or similar agreement and any other necessary agreement with respect to any Securities will have been duly authorized and validly executed and delivered by the Company and the other party or parties thereto; and (iv) all Securities will be issued and sold in compliance with applicable federal and state securities laws and in the manner stated in the Registration Statement, the Base Prospectus and the applicable definitive underwriting or similar agreement, we are of the opinion that:

Assuming that the issuance and terms of any Securities and the terms of the offering thereof, including the issuance of any Securities upon exercise, exchange or conversion of any debt securities being offered or issued pursuant to the Registration Statement (“Debt Securities”), have been duly authorized, created and, if appropriate, reserved for issuance upon such exercise, exchange or conversion, when: (i) the Company has received the consideration therefor specified in any applicable underwriting or similar agreement approved by the Company’s board of directors and (ii) in the case of any Securities to be issued upon the exchange or conversion of Debt Securities, upon due exercise of such exchange or conversion rights in accordance with the terms of the applicable instruments, then in each case such Securities (including any Securities that may be issued upon conversion or exchange pursuant to the terms of any Debt Securities) will be validly issued, fully paid and nonassessable.

The opinion expressed herein is limited to the corporate laws of the State of Delaware and we express no opinion as to the effect on the matters covered by this letter of the laws of any other jurisdiction.

We hereby consent to the filing of this letter as an exhibit to the Registration Statement and to the reference to our firm under the caption “Legal Matters” in the Base Prospectus. In giving such consent we do not hereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Securities and Exchange Commission.

Very truly yours,

/s/ Weil, Gotshal & Manges LLP

EX-12.1

Exhibit 12.1

AK STEEL HOLDING CORPORATION

RATIO OF EARNINGS TO COMBINED FIXED CHARGES

(dollars in millions)

	Nine months ended September 30, 2012			Year Ended December 31,
				2011			2010			2009			2008			2007
Combined fixed charges:
Capitalized interest credit	$	1.7		$	6.7		$	10.1		$	7.8		$	4.4		$	3.6
Interest factor in rent expense		2.3			3.0			3.2			2.8			3.3			3.7
Other interest and fixed charges		60.5			47.9			33.6			37.4			48.9			69.3
Preference dividends		—			—			—			—			—			—
Total combined fixed charges	$	64.5		$	57.6		$	46.9		$	48.0		$	56.6		$	76.6
Earnings—pre-tax income (loss) with applicable adjustments	$	32.5		$	(186.0	)	$	(125.4	)	$	(47.9	)	$	55.3		$	674.5
Ratio of earnings to combined fixed charges		NM	*		NM	*		NM	*		NM	*		NM	*		8.8

* For the nine months ended September 30, 2012 and the years ended December 31, 2011, 2010, 2009 and 2008, earnings were less than combined fixed charges by $32.0, $243.6, $172.3, $95.9 and $1.3, respectively.

EX-23.3

Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Post-Effective Amendment No. 1 to Registration Statement No. 333-166303 on Form S-3 of our reports dated February 27, 2012, relating to the financial statements of AK Steel Holding Corporation (which report expresses an unqualified opinion on the consolidated financial statements and includes an explanatory paragraph referring to the change in method of presenting comprehensive income in 2011), and the effectiveness of AK Steel Holding Corporation’s internal control over financial reporting, appearing in the Annual Report on Form 10-K of AK Steel Holding Corporation for the year ended December 31, 2011, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.

/s/ DELOITTE & TOUCHE LLP

Cincinnati, Ohio

November 13, 2012