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  <element id="aa_GainOnTerminationOfInterestRateSwaps" name="GainOnTerminationOfInterestRateSwaps" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <element id="aa_ScheduleOfDebtTable" name="ScheduleOfDebtTable" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" xbrli:periodType="duration" />
  <element id="aa_OtherIncomeExpensesNetMember" name="OtherIncomeExpensesNetMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_WireHarnessAndElectricalPortionMember" name="WireHarnessAndElectricalPortionMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_NoticePeriodForDebtRedemption" name="NoticePeriodForDebtRedemption" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_PeriodOfAllegedConspiracyYears" name="PeriodOfAllegedConspiracyYears" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element id="aa_AluminiumBahrainVAlcoaMember" name="AluminiumBahrainVAlcoaMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_NumberOfYearsOperatingUnderPowerSupplyStructured" name="NumberOfYearsOperatingUnderPowerSupplyStructured" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_AmountOfCurtailment" name="AmountOfCurtailment" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element id="aa_SpanishGovernmentMember" name="SpanishGovernmentMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_DaysProvidedToSubmitObservationsAndComments" name="DaysProvidedToSubmitObservationsAndComments" nillable="true" type="xbrli:positiveIntegerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_NumberOfCleanupLocations" name="NumberOfCleanupLocations" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_FrequencyOfSedimentErosionFromWinterRiverIceFormationAndBreakup" name="FrequencyOfSedimentErosionFromWinterRiverIceFormationAndBreakup" nillable="true" type="xbrli:positiveIntegerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_FundedPercentOfUSPensionPlan" name="FundedPercentOfUSPensionPlan" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element id="aa_CapitalInvestmentCommitmentDuration" name="CapitalInvestmentCommitmentDuration" nillable="true" type="xbrli:positiveIntegerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_PowerSelfSufficiency" name="PowerSelfSufficiency" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_TotalEnergyDemand" name="TotalEnergyDemand" nillable="true" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_AssuredEnergy" name="AssuredEnergy" nillable="true" type="us-types:perUnitItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <element id="aa_EnergyCapacityInstalled" name="EnergyCapacityInstalled" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_AssuredPowerFromInstalledCapacity" name="AssuredPowerFromInstalledCapacity" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_LitigationMatterMember" name="LitigationMatterMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_PrejudgmentInterestBreachOfWarrantyAwardMember" name="PrejudgmentInterestBreachOfWarrantyAwardMember" nillable="true" type="nonnum:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_DebtInstrumentFeeAmountPercentage" name="DebtInstrumentFeeAmountPercentage" nillable="true" type="num:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_UnsecuredRevolvingCredit" name="UnsecuredRevolvingCredit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="aa_LetterOfLimitSublimit" name="LetterOfLimitSublimit" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="aa_UndrawnAmountAndTerminated" name="UndrawnAmountAndTerminated" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <element id="aa_NumberOfYearsOfNaturalGasSupplyContract" name="NumberOfYearsOfNaturalGasSupplyContract" nillable="true" type="xbrli:positiveIntegerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_NumberOfCommoditiesSubjectToCeiling" name="NumberOfCommoditiesSubjectToCeiling" nillable="true" type="xbrli:positiveIntegerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <element id="aa_DebtInstrumentInterestPerYear" name="DebtInstrumentInterestPerYear" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
</schema>
