1 EXHIBIT 3.18 ARTICLES OF ORGANIZATION OF KAISER TEXAS MICROMILL HOLDINGS, LLC I, the undersigned natural person of the age of eighteen (18) years or more, acting as organizer of a limited liability company under the Texas Limited Liability Company Act (the "Act"), do hereby adopt the following Articles of Organization for such company: ARTICLE I NAME The name of the limited liability company is "Kaiser Texas Micromill Holdings, LLC" (hereinafter referred to as the "Company"). ARTICLE II DURATION The period of the duration of the Company is perpetual. ARTICLE III PURPOSE The purpose for which the Company is organized is to transact any and all lawful business for which limited liability companies may be formed under the Act. ARTICLE IV PRINCIPAL PLACE OF BUSINESS; REGISTERED OFFICE The address of the Company's principal place of business in Texas is 5847 San Felipe, Suite 2600, Houston, Texas 77057. The address of the Company's initial registered office in Texas is 811 Dallas Avenue, Houston, Texas 77002 and the name of such initial registered agent is C T Corporation System. ARTICLE V MANAGEMENT The number of managers shall from time to time be fixed by the regulations of the Company and, until changed in accordance with the manner prescribed by the regulations, shall be four (4). The names and addresses of each person who is to serve as a manager until the first annual meeting of the members of the Company, or until their successors shall have been duly elected, or until their earlier death, resignation or removal, are as follows: Page 1 of 2 2 Joseph A. Bonn 6177 Sunol Boulevard Pleasanton, CA 94566 George T. Haymaker, Jr. 5847 San Felipe, Suite 2600 Houston, Texas 77057 John T. LaDuc 5847 San Felipe, Suite 2600 Houston, Texas 77057 Anthony R. Pierno 5847 San Felipe, Suite 2600 Houston, Texas 77057 ARTICLE VI ORGANIZER The name and address of the organizer of the Company are as follows: Lisa S. Blaha 5847 San Felipe, Suite 2600 Houston, Texas 77057 IN WITNESS WHEREOF, I have hereunto set my hand this 11th day of December, 1995. ORGANIZER /s/ LISA S. BLAHA ------------------------------------- Lisa S. Blaha Page 2 of 2