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  <element name="RestructuringProgramsLayoffsTwoThousandSixteenMember" id="aa_RestructuringProgramsLayoffsTwoThousandSixteenMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RestructuringReservePeriodExpenses" id="aa_RestructuringReservePeriodExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RTIMember" id="aa_RTIMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="RussiaMember" id="aa_RussiaMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SaoLuisSmelterMember" id="aa_SaoLuisSmelterMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfCarryingValuesAndFairValuesOfOtherFinancialInstrumentsTableTextBlock" id="aa_ScheduleOfCarryingValuesAndFairValuesOfOtherFinancialInstrumentsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfDerivativeAssetsAndLiabilitiesAtFairValueTableTextBlock" id="aa_ScheduleOfDerivativeAssetsAndLiabilitiesAtFairValueTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfFinancialReceivablesLineItems" id="aa_ScheduleOfFinancialReceivablesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfFinancialReceivablesTable" id="aa_ScheduleOfFinancialReceivablesTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfOtherNonOperatingIncomeExpenseTable" id="aa_ScheduleOfOtherNonOperatingIncomeExpenseTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem"/>
  <element name="ScheduleOfProFormaRestructuringChargesByReportableSegmentBeforeIncomeTaxTableTextBlock" id="aa_ScheduleOfProFormaRestructuringChargesByReportableSegmentBeforeIncomeTaxTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfQuantitativeInformationForLevelThreeDerivativeContractsTableTextBlock" id="aa_ScheduleOfQuantitativeInformationForLevelThreeDerivativeContractsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ScheduleOfSegmentReportingInformationToConsolidateNetIncomeLossAttributableToParentTableTextBlock" id="aa_ScheduleOfSegmentReportingInformationToConsolidateNetIncomeLossAttributableToParentTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SecondInstallmentMember" id="aa_SecondInstallmentMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationCorporateExpenses" id="aa_SegmentReportingInformationCorporateExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationDepreciationDepletionAndAmortizationExpenses" id="aa_SegmentReportingInformationDepreciationDepletionAndAmortizationExpenses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationEquityInNetIncomeOfEquityMethodInvesteesOfSegments" id="aa_SegmentReportingInformationEquityInNetIncomeOfEquityMethodInvesteesOfSegments" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationImpactOfLastInFirstOut" id="aa_SegmentReportingInformationImpactOfLastInFirstOut" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationIncomeTaxExpensesBenefits" id="aa_SegmentReportingInformationIncomeTaxExpensesBenefits" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationIntersegmentRevenues" id="aa_SegmentReportingInformationIntersegmentRevenues" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationMetalPriceIncreaseDecrease" id="aa_SegmentReportingInformationMetalPriceIncreaseDecrease" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationOtherIncomeExpenseNet" id="aa_SegmentReportingInformationOtherIncomeExpenseNet" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationProfitsLosses" id="aa_SegmentReportingInformationProfitsLosses" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationRestructuringAndOtherCharges" id="aa_SegmentReportingInformationRestructuringAndOtherCharges" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SegmentReportingInformationRevenuesFromExternalCustomers" id="aa_SegmentReportingInformationRevenuesFromExternalCustomers" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SherwinTXMember" id="aa_SherwinTXMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ShutdownAndCurtailmentActionsMember" id="aa_ShutdownAndCurtailmentActionsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SummaryOfStatementOfOperationsInformationForEquityInvestmentsTableTextBlock" id="aa_SummaryOfStatementOfOperationsInformationForEquityInvestmentsTableTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="SupplierAndCustomerContractMember" id="aa_SupplierAndCustomerContractMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TaxCreditPreviouslyClaimedAndDisallowedByTaxAuthority" id="aa_TaxCreditPreviouslyClaimedAndDisallowedByTaxAuthority" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThirdPartySalesMember" id="aa_ThirdPartySalesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="ThreeYearEquityCallPlanMember" id="aa_ThreeYearEquityCallPlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TitalMember" id="aa_TitalMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TranslationAdjustmentFunctionalToAcquisitionIncreaseDecreaseGrossOfTax" id="aa_TranslationAdjustmentFunctionalToAcquisitionIncreaseDecreaseGrossOfTax" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TransportationAndConstructionSolutionsMember" id="aa_TransportationAndConstructionSolutionsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="TwoContractsMember" id="aa_TwoContractsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item"/>
  <element name="WarrickSmelterPointComfortRefineryAndWenatcheeSmelterMember" id="aa_WarrickSmelterPointComfortRefineryAndWenatcheeSmelterMember" 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"/>
</schema>
