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  <xs:element id="arnc_GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedByBirnbergPeirceLtdMember" abstract="true" name="GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedByBirnbergPeirceLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_ShortTermDebtWeightedAverageDaysOutstandingOverTime" abstract="false" name="ShortTermDebtWeightedAverageDaysOutstandingOverTime" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:intItemType"/>
  <xs:element id="arnc_GrenfellTowerFireEmergencyRespondersRepresentedByPenningtonsManchesCooperLLPMember" abstract="true" name="GrenfellTowerFireEmergencyRespondersRepresentedByPenningtonsManchesCooperLLPMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_DeferredTaxAssetNetFutureTaxableIncomeProjectionReversalOfTemporaryDifferencesPercentageOfExcludedAmount" abstract="false" name="DeferredTaxAssetNetFutureTaxableIncomeProjectionReversalOfTemporaryDifferencesPercentageOfExcludedAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="arnc_GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedByHoweAndCoMember" abstract="true" name="GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedByHoweAndCoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_SpinoffTransactionShareConversionRatio" abstract="false" name="SpinoffTransactionShareConversionRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="arnc_OutOfTheMoneyStockOptionsMember" abstract="true" name="OutOfTheMoneyStockOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_OtherGeographicalAreasMember" abstract="true" name="OtherGeographicalAreasMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_DeferredTaxAssetNetFutureTaxableIncomeProjectionTaxableTemporaryDifferencesThatReverseWithinCarryforwardPeriodPercentageOfExcludedAmount" abstract="false" name="DeferredTaxAssetNetFutureTaxableIncomeProjectionTaxableTemporaryDifferencesThatReverseWithinCarryforwardPeriodPercentageOfExcludedAmount" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="arnc_GoodwillImpairmentQuantitativeTestMaximumPeriodBetweenTests" abstract="false" name="GoodwillImpairmentQuantitativeTestMaximumPeriodBetweenTests" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="arnc_LossContingencyNumberOfSubsidiaries" abstract="false" name="LossContingencyNumberOfSubsidiaries" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="arnc_DeferredTaxAssetLeasingArrangements" abstract="false" name="DeferredTaxAssetLeasingArrangements" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="arnc_GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedByBhattMurphyLtdMember" abstract="true" name="GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedByBhattMurphyLtdMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_DebtInstrumentRedemptionMinimumAggregatePrincipalFollowingRedemption" abstract="false" name="DebtInstrumentRedemptionMinimumAggregatePrincipalFollowingRedemption" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="arnc_A2022RestructuringProgramsMember" abstract="true" name="A2022RestructuringProgramsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_GrenfellTowerFireSurvivorsAndEstatesOfDecedentsMember" abstract="true" name="GrenfellTowerFireSurvivorsAndEstatesOfDecedentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedBySaundersLawMember" abstract="true" name="GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedBySaundersLawMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_DeferredTaxAssetExpiresWithinTenYearsMember" abstract="true" name="DeferredTaxAssetExpiresWithinTenYearsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_BuildingandConstructionMember" abstract="true" name="BuildingandConstructionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_LegacyTaxMattersMember" abstract="true" name="LegacyTaxMattersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedBySMQLegalServicesMember" abstract="true" name="GrenfellTowerFireSurvivorsAndEstatesOfDecedentsRepresentedBySMQLegalServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTaxSeparationRelatedAdjustments" abstract="false" name="OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTaxSeparationRelatedAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="arnc_EffectiveIncomeTaxRateReconciliationChangeInForeignDeferredTaxAssetsValuationAllowancePercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationChangeInForeignDeferredTaxAssetsValuationAllowancePercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="arnc_InterestCostComponentsAbstract" abstract="true" name="InterestCostComponentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="arnc_ArconicCorporationMember" abstract="true" name="ArconicCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_DefinedBenefitPlanExpectedFutureBenefitPaymentsGrossAbstract" abstract="true" name="DefinedBenefitPlanExpectedFutureBenefitPaymentsGrossAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="arnc_A2020PerformanceStockUnitAwardsMember" abstract="true" name="A2020PerformanceStockUnitAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets" abstract="false" name="IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="arnc_EffectiveIncomeTaxRateReconciliationNondeductibleOfficerCompensationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleOfficerCompensationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="arnc_PatentsAndLicensesMember" abstract="true" name="PatentsAndLicensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_ScheduleOfGuaranteesLettersOfCreditAndSuretyBondsTableTextBlock" abstract="false" name="ScheduleOfGuaranteesLettersOfCreditAndSuretyBondsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="arnc_ArrangementTypeDomain" abstract="true" name="ArrangementTypeDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_DeferredTaxAssetExpirationPeriodAxis" abstract="true" name="DeferredTaxAssetExpirationPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="arnc_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostYieldCurveModelProjectedPlanCashFlowsWeightedAverageDuration" abstract="false" name="DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostYieldCurveModelProjectedPlanCashFlowsWeightedAverageDuration" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="arnc_RestructuringSettlementAndImpairmentProvisionsIncludingGainLossOnDispositionOfAssetsAndBusiness" abstract="false" name="RestructuringSettlementAndImpairmentProvisionsIncludingGainLossOnDispositionOfAssetsAndBusiness" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="arnc_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="arnc_ValuationAllowanceDeferredTaxAssetIncreaseDecreaseResultingFromForeignCurrencyTranslation" abstract="false" name="ValuationAllowanceDeferredTaxAssetIncreaseDecreaseResultingFromForeignCurrencyTranslation" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="arnc_ShareBasedCompensationArrangementByShareBasedPaymentAwardVolumeWeightedAverageTradingPriceMeasurementPeriodTradingDays" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVolumeWeightedAverageTradingPriceMeasurementPeriodTradingDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="arnc_ReceivablesPurchaseAgreementMember" abstract="true" name="ReceivablesPurchaseAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_LafayetteIndianaMember" abstract="true" name="LafayetteIndianaMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_ShareBasedCompensationArrangementByShareBasedPaymentAwardVolumeWeightedAverageTradingPrice" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVolumeWeightedAverageTradingPrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="arnc_DefinedBenefitPlanOtherInvestmentsExcludingRealEstateMember" abstract="true" name="DefinedBenefitPlanOtherInvestmentsExcludingRealEstateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_AccrualForEnvironmentalLossContingenciesYearsForCompletion" abstract="false" name="AccrualForEnvironmentalLossContingenciesYearsForCompletion" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="arnc_DeferredTaxAssetExpirationDependentUponReversalOfUnderlyingTemporaryDifferenceMember" abstract="true" name="DeferredTaxAssetExpirationDependentUponReversalOfUnderlyingTemporaryDifferenceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="arnc_PaymentsToSettleWorkingCapitalAndOtherAdjustmentsRelatedToDisposal" abstract="false" name="PaymentsToSettleWorkingCapitalAndOtherAdjustmentsRelatedToDisposal" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="arnc_DefinedBenefitPlanNetPeriodicBenefitCostLumpSumBenefits" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostLumpSumBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="arnc_NumberOfPrimaryOperatingLocations" abstract="false" name="NumberOfPrimaryOperatingLocations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="arnc_DefinedBenefitPlanExpectedFutureBenefitPaymentIncreaseDecreaseInEstimatedAnnualPaymentAmount" abstract="false" name="DefinedBenefitPlanExpectedFutureBenefitPaymentIncreaseDecreaseInEstimatedAnnualPaymentAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
</XBRL>
