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  <element name="NumberOfContracts" id="aa_NumberOfContracts" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfDaysRequiredToDismissLawsuit" id="aa_NumberOfDaysRequiredToDismissLawsuit" type="xbrli:integerItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="NumberOfEmployeesAssociatedWithLayoffCosts" id="aa_NumberOfEmployeesAssociatedWithLayoffCosts" type="xbrli:positiveIntegerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="OtherDerivativeContractsEstimatedTermOfQuotedMarketPricesInYears" id="aa_OtherDerivativeContractsEstimatedTermOfQuotedMarketPricesInYears" type="xbrli:integerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="OtherSitesMember" id="aa_OtherSitesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="OwnershipInterestIssuedAsGuaranteeForSmeltingAndRollingCompanies" id="aa_OwnershipInterestIssuedAsGuaranteeForSmeltingAndRollingCompanies" type="num:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="SaleOfCustomerReceivables" id="aa_SaleOfCustomerReceivables" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="SerraDoFacaoProjectMember" id="aa_SerraDoFacaoProjectMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SharesThatWouldHaveBeenIncludedInDilutedEarningsPerShareCalculation" id="aa_SharesThatWouldHaveBeenIncludedInDilutedEarningsPerShareCalculation" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="SixYearNaturalGasSupplyContractMember" id="aa_SixYearNaturalGasSupplyContractMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="SmeltingAndRollingMillCompaniesMember" id="aa_SmeltingAndRollingMillCompaniesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="StockAndPerformanceAwardsMember" id="aa_StockAndPerformanceAwardsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="TariffsGrantedBySpainMember" id="aa_TariffsGrantedBySpainMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="ThreeHundredFiftyOneMegawattTapocoHydroelectricProjectMember" id="aa_ThreeHundredFiftyOneMegawattTapocoHydroelectricProjectMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="TotalEnergyDemand" id="aa_TotalEnergyDemand" type="num:powerItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TotalInvestmentInProject" id="aa_TotalInvestmentInProject" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
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  <element name="TwoTermLoanAgreementsMember" id="aa_TwoTermLoanAgreementsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageExercisePriceOfUnderwaterOptions" id="aa_WeightedAverageExercisePriceOfUnderwaterOptions" type="num:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WeightedAverageInterestRateOutstandingBorrowings" id="aa_WeightedAverageInterestRateOutstandingBorrowings" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WriteOffOfReceivable" id="aa_WriteOffOfReceivable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
</schema>
