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        <link:definition>6000 - Basis of Presentation</link:definition>
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        <link:definition>6010 - Earnings and Dividends Per Share</link:definition>
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        <link:definition>6020 - Inventories</link:definition>
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        <link:definition>6030 - Pension and other postretirement benefits</link:definition>
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        <link:definition>6040 - Share Based Compensation</link:definition>
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        <link:definition>6050 - Long-term Debt</link:definition>
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        <link:definition>6060 - Income Taxes</link:definition>
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        <link:definition>6080 - Environmental and Legal Contingencies</link:definition>
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        <link:definition>6090 - Fair Value Measurements</link:definition>
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        <link:usedOn>link:definitionLink</link:usedOn>
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        <link:definition>6100 - Investments in an Unrealized Loss Position</link:definition>
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        <link:definition>6110 - Variable Interest Entity</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://aksteel.com/role/DisclosuresAboutDerivativeInstrumentsandHedgingActivities" id="DisclosuresAboutDerivativeInstrumentsandHedgingActivities">
        <link:definition>6120 - Disclosures About Derivative Instruments and Hedging Activities</link:definition>
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      <link:roleType roleURI="http://aksteel.com/role/NewAccountingPronouncements" id="NewAccountingPronouncements">
        <link:definition>6150 - New Accounting Pronouncements</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://aksteel.com/role/SupplementalGuarantorInformation" id="SupplementalGuarantorInformation">
        <link:definition>6160 - Supplemental Guarantor Information</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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        <link:definition>6130 - Subsequent Event</link:definition>
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        <link:definition>1000 - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</link:definition>
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        <link:usedOn>link:calculationLink</link:usedOn>
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      <link:roleType roleURI="http://aksteel.com/role/CondensedConsolidatedBalanceSheets" id="CONDENSEDCONSOLIDATEDBALANCESHEETS">
        <link:definition>2000 - CONDENSED CONSOLIDATED BALANCE SHEETS</link:definition>
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        <link:definition>3000 - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
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      <link:roleType roleURI="http://aksteel.com/role/ParentheticalDataForBalanceSheet" id="ParentheticalDataForBalanceSheet">
        <link:definition>2100 - Parenthetical Data for the Balancce Sheet</link:definition>
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