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  <xsd:element abstract="true" id="cstm_DisclosureOfInputOfModelUsedForPerformancebasedRSULineItems" name="DisclosureOfInputOfModelUsedForPerformancebasedRSULineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfInputOfModelUsedForPerformancebasedRSUTable" name="DisclosureOfInputOfModelUsedForPerformancebasedRSUTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfLiquidityRiskLineItems" name="DisclosureOfLiquidityRiskLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfMovementOfPotentialSharesLineItems" name="DisclosureOfMovementOfPotentialSharesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfMovementOfPotentialSharesTable" name="DisclosureOfMovementOfPotentialSharesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfNumberOfOtherEquityInstrumentsExplanatory" name="DisclosureOfNumberOfOtherEquityInstrumentsExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfOtherGainsNetExplanatory" name="DisclosureOfOtherGainsNetExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfProvisionsByTypeExplanatory" name="DisclosureOfProvisionsByTypeExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfReconciliationOfSegmentProfitBeforeTaxAndProfitLossExplanatory" name="DisclosureOfReconciliationOfSegmentProfitBeforeTaxAndProfitLossExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfRestatementAbstract" name="DisclosureOfRestatementAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfSegmentAdjustedEbitdaAndReconciliationOfAdjustedEbitdaToNetIncomeLineItems" name="DisclosureOfSegmentAdjustedEbitdaAndReconciliationOfAdjustedEbitdaToNetIncomeLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfSegmentAdjustedEbitdaAndReconciliationOfAdjustedEbitdaToNetIncomeTable" name="DisclosureOfSegmentAdjustedEbitdaAndReconciliationOfAdjustedEbitdaToNetIncomeTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfSegmentAssetsExplanatory" name="DisclosureOfSegmentAssetsExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfSegmentCapitalExpendituresExplanatory" name="DisclosureOfSegmentCapitalExpendituresExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfStatementOfComplianceExplanatory" name="DisclosureOfStatementOfComplianceExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfSummaryOfSignificantAccountingPoliciesAbstract" name="DisclosureOfSummaryOfSignificantAccountingPoliciesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfTradeAndOtherReceivablesLineItems" name="DisclosureOfTradeAndOtherReceivablesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureOfTradeAndOtherReceivablesTable" name="DisclosureOfTradeAndOtherReceivablesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfTradePayablesAndOtherExplanatory" name="DisclosureOfTradePayablesAndOtherExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DisclosureOfTradeReceivablesNetDenominatedInMajorCurrenciesTextBlock" name="DisclosureOfTradeReceivablesNetDenominatedInMajorCurrenciesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureofcashflowstatementAbstract" name="DisclosureofcashflowstatementAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureofemployeebenefitsAbstract" name="DisclosureofemployeebenefitsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureoffinancialriskmanagementAbstract" name="DisclosureoffinancialriskmanagementAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DisclosureofsharecapitalreservesandotherequityinterestAbstract" name="DisclosureofsharecapitalreservesandotherequityinterestAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_DueToFactorRelatedToTradeAccountReceivablesSold" name="DueToFactorRelatedToTradeAccountReceivablesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_EnergyFutureContractMember" name="EnergyFutureContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_EnteringIntoNewCreditFacilitiesMember" name="EnteringIntoNewCreditFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_EquityAwardsPlanMember" name="EquityAwardsPlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_ExchangesGainsLossesFromRemeasurementOfMonetaryAssetsAndLiabilitiesNet" name="ExchangesGainsLossesFromRemeasurementOfMonetaryAssetsAndLiabilitiesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_ExpectedDividendAsPercentageOtherEquityInstrumentsGranted" name="ExpectedDividendAsPercentageOtherEquityInstrumentsGranted" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_ExpectedVolatilityOtherEquityInstrumentsGranted" name="ExpectedVolatilityOtherEquityInstrumentsGranted" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_ExpenseRelatingToShorttermLeasesLeasesOfLowvalueAssetsAndVariableLeasePaymentsForWhichRecognitionExemptionHasBeenUsed" name="ExpenseRelatingToShorttermLeasesLeasesOfLowvalueAssetsAndVariableLeasePaymentsForWhichRecognitionExemptionHasBeenUsed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_ExpensesOnFactoringArrangementsPaidOrPayable" name="ExpensesOnFactoringArrangementsPaidOrPayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_FactoredAssetsDerecognizedAndRecognizedInConsolidatedStatementOfFinancialPosition" name="FactoredAssetsDerecognizedAndRecognizedInConsolidatedStatementOfFinancialPosition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cstm_FactoredAssetsRecognizedInConsolidatedStatementOfFinancialPosition" name="FactoredAssetsRecognizedInConsolidatedStatementOfFinancialPosition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cstm_FactoringMaximumCapacity" name="FactoringMaximumCapacity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_FairValueAtMeasurementDateOtherEquityInstrumentsGrantedPerShare" name="FairValueAtMeasurementDateOtherEquityInstrumentsGrantedPerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_FairValueOfPerformanceStockUnitsAndRestrictedStockUnitsVested" name="FairValueOfPerformanceStockUnitsAndRestrictedStockUnitsVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_FinanceLeasesAndOtherLoans" name="FinanceLeasesAndOtherLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_FinancialLiabilitiesAtFairValueThroughOtherComprehensiveIncomeCategoryMember" name="FinancialLiabilitiesAtFairValueThroughOtherComprehensiveIncomeCategoryMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_FinancialLiabilitiesDesignatedAsNotMeasuredAtFairValueAbstract" name="FinancialLiabilitiesDesignatedAsNotMeasuredAtFairValueAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_FinancingArrangementsMember" name="FinancingArrangementsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_ForeignExchangeForwardContractsMember" name="ForeignExchangeForwardContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_FrenchGovernmentMember" name="FrenchGovernmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_FrenchInventoryFacilityMember" name="FrenchInventoryFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_FrenchPGEMember" name="FrenchPGEMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_FullNominalAmountOfHedgingInstrument" name="FullNominalAmountOfHedgingInstrument" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_GainsLossesOnPensionPlanAmendments" name="GainsLossesOnPensionPlanAmendments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_GainsLossesRecognizedOnReclassificationAdjustmentsOnCashFlowHedges" name="GainsLossesRecognizedOnReclassificationAdjustmentsOnCashFlowHedges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_GermanStateMember" name="GermanStateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_GermanySwitzerlandAndCzechRepublicMember" name="GermanySwitzerlandAndCzechRepublicMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_GovernmentAssistanceAbstract" name="GovernmentAssistanceAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_GovernmentAssistanceTextBlock" name="GovernmentAssistanceTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_GuaranteedCreditFacilitiesMember" name="GuaranteedCreditFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_GuarantorAxis" name="GuarantorAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_GuarantorDomain" name="GuarantorDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_HoldingsAndCorporateMember" name="HoldingsAndCorporateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_HourlyPensionMember" name="HourlyPensionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_IFRS16Member" name="IFRS16Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_ImmediateRecognitionActuarialGainsLossesArisingFromChangeInAssumptionRecognizedInProfitLoss" name="ImmediateRecognitionActuarialGainsLossesArisingFromChangeInAssumptionRecognizedInProfitLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_IncomeStatementMember" name="IncomeStatementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_IncomeTaxesAbstract" name="IncomeTaxesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_IncreaseDecreaseInTradeWorkingCapitalAbstract" name="IncreaseDecreaseInTradeWorkingCapitalAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_IncreaseThroughBusinessCombinationsBorrowings" name="IncreaseThroughBusinessCombinationsBorrowings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_IntegrationAndAcquisitionCosts" name="IntegrationAndAcquisitionCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_InterestAccruedOnLeaseLiabilities" name="InterestAccruedOnLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_InterestCostOnPensionAndEmployeeBenefits" name="InterestCostOnPensionAndEmployeeBenefits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_InventorywritedownAllowance" name="InventorywritedownAllowance" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_LandAndPropertyRightsMember" name="LandAndPropertyRightsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_MachineryAndEquipment1Member" name="MachineryAndEquipment1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_MiscellaneousOtherGainsLosses" name="MiscellaneousOtherGainsLosses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_MovementInAccruedInterestAndInterestCostCapitalised" name="MovementInAccruedInterestAndInterestCostCapitalised" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_MuscleShoalsFactoringFacilityMember" name="MuscleShoalsFactoringFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_NominalAmountOfHedgingInstruments" name="NominalAmountOfHedgingInstruments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_NoncurrentPayablesToEmployees" name="NoncurrentPayablesToEmployees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_NoncurrentPrepaidExpenses" name="NoncurrentPrepaidExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_NonqualifyingHedgesMember" name="NonqualifyingHedgesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_NumberOfAdministrativeAndCommercialSites" name="NumberOfAdministrativeAndCommercialSites" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cstm_NumberOfCountriesInWhichEntityOperates1" name="NumberOfCountriesInWhichEntityOperates1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cstm_NumberOfCreditFacilities" name="NumberOfCreditFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cstm_NumberOfFacilities" name="NumberOfFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cstm_NumberOfInstrumentsOtherEquityInstrumentsVested" name="NumberOfInstrumentsOtherEquityInstrumentsVested" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_NumberOfOtherEquityInstrumentsForfeitedOnDepartureOfCertainBeneficiariesInSharebasedPaymentArrangement" name="NumberOfOtherEquityInstrumentsForfeitedOnDepartureOfCertainBeneficiariesInSharebasedPaymentArrangement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_NumberOfOtherEquityInstrumentsForfeitedOnNonFulfillmentOfPerformanceConditionsInSharebasedPaymentArrangement" name="NumberOfOtherEquityInstrumentsForfeitedOnNonFulfillmentOfPerformanceConditionsInSharebasedPaymentArrangement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_NumberOfProductionFacilities" name="NumberOfProductionFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cstm_NumberOfWorldClassTechnologyCenter" name="NumberOfWorldClassTechnologyCenter" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cstm_NumberofVotingRightsPerShare" name="NumberofVotingRightsPerShare" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_OneLargestCustomerMember" name="OneLargestCustomerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_OtherAdjustments" name="OtherAdjustments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherBenefitPlansMember" name="OtherBenefitPlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherComprehensiveIncomeLossMember" name="OtherComprehensiveIncomeLossMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherContractLiabilitiesMember" name="OtherContractLiabilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherCostMember" name="OtherCostMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherCountriesMember" name="OtherCountriesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherCurrenciesMember" name="OtherCurrenciesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_OtherCurrentAssetsReceivables" name="OtherCurrentAssetsReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cstm_OtherCurrentPayablesOther" name="OtherCurrentPayablesOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_OtherEmployeeBenefitsMember" name="OtherEmployeeBenefitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherEuropeMember" name="OtherEuropeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherExtrudedProductsMember" name="OtherExtrudedProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherFinancialAssetsMember" name="OtherFinancialAssetsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherFinancialLiabilitiesMember" name="OtherFinancialLiabilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherFutureContractMember" name="OtherFutureContractMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherGainsAndLossesMember" name="OtherGainsAndLossesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherGainsAndLossesNetMember" name="OtherGainsAndLossesNetMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherLoansMember" name="OtherLoansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_OtherNoncurrentAssetsReceivables" name="OtherNoncurrentAssetsReceivables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cstm_OtherNoncurrentPayablesOther" name="OtherNoncurrentPayablesOther" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_OtherPostEmploymentBenefitMember" name="OtherPostEmploymentBenefitMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_OtherPostRetirementBenefitsMember" name="OtherPostRetirementBenefitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_OtherReceivablesNoncurrent" name="OtherReceivablesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_PackagingAndAutomotiveRolledProductsMember" name="PackagingAndAutomotiveRolledProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_PackagingRolledProductsMember" name="PackagingRolledProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_PanUSABLFacilityMember" name="PanUSABLFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_PanUsAblFacilityDueTwoThousandTwentyTwoMember" name="PanUsAblFacilityDueTwoThousandTwentyTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_PastDueOneToThirtyDaysMember" name="PastDueOneToThirtyDaysMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_PaymentOfDeferredFinancingCostsAndExitFees" name="PaymentOfDeferredFinancingCostsAndExitFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_PercentageOfFairValueSeniorNotesIssued" name="PercentageOfFairValueSeniorNotesIssued" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="cstm_PercentageOfRevolvingLoanCommitments" name="PercentageOfRevolvingLoanCommitments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_PercentageOfSharebasedPaymentsVestingMultiplier" name="PercentageOfSharebasedPaymentsVestingMultiplier" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_PerformanceBasedRestrictedStockUnitsMember" name="PerformanceBasedRestrictedStockUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_PerformanceShareUnitsMember" name="PerformanceShareUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_PresentValueOfUnfundedObligation" name="PresentValueOfUnfundedObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_ProceedsFromGovernmentAssistanceCOVID19" name="ProceedsFromGovernmentAssistanceCOVID19" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_ProceedsFromRepaymentsOfNoncurrentBorrowings" name="ProceedsFromRepaymentsOfNoncurrentBorrowings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_Proceedsfromuncommittedcreditfacilities" name="Proceedsfromuncommittedcreditfacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_ProcurementPenaltiesAndTerminationFees" name="ProcurementPenaltiesAndTerminationFees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_ProvisionForDiseaseClaims" name="ProvisionForDiseaseClaims" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_ProvisionForLitigation" name="ProvisionForLitigation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_QualifyingHedgesMember" name="QualifyingHedgesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_RealizedAndUnrealizedExchangeGainsLossesOnFinancingActivitiesNet" name="RealizedAndUnrealizedExchangeGainsLossesOnFinancingActivitiesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_RealizedGainLossesOnDerivatives" name="RealizedGainLossesOnDerivatives" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_RealizedGainsLossesOnForeignCurrencyDerivativesNet" name="RealizedGainsLossesOnForeignCurrencyDerivativesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_RepaymentOfObligationsUnderFinanceLeasesAndOtherDebts" name="RepaymentOfObligationsUnderFinanceLeasesAndOtherDebts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_RepaymentsAndProceedsFromRevolvingCreditFacilityAndOtherLoans" name="RepaymentsAndProceedsFromRevolvingCreditFacilityAndOtherLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_ReserveOfCashFlowHedgesAndNetInvestmentHedgesMember" name="ReserveOfCashFlowHedgesAndNetInvestmentHedgesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_RestatedBalanceMember" name="RestatedBalanceMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_RestrictedStockUnitsMember" name="RestrictedStockUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_RetainedEarningsandOtherReserves" name="RetainedEarningsandOtherReserves" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cstm_RetirementBenefitsMember" name="RetirementBenefitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_RevenueFromContractWithCustomersMember" name="RevenueFromContractWithCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_RevolvingCreditFacilityOutstanding" name="RevolvingCreditFacilityOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_RiskFreeInterestRateOtherEquityInstrumentsGranted" name="RiskFreeInterestRateOtherEquityInstrumentsGranted" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_SalariedPensionMember" name="SalariedPensionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_ScheduleOfReconciliationOfMovementsInNetBorrowingsExplanatory" name="ScheduleOfReconciliationOfMovementsInNetBorrowingsExplanatory" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_SecuredInventoryBasedFacilityDueTwoThousandNineteenMember" name="SecuredInventoryBasedFacilityDueTwoThousandNineteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_SeniorNotesFairValue" name="SeniorNotesFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="cstm_ShareBasedCompensationCosts" name="ShareBasedCompensationCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cstm_ShareBasedCompensationVestingPeriod" name="ShareBasedCompensationVestingPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_ShareBasedPaymentPlansLineItems" name="ShareBasedPaymentPlansLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_ShareBasedPaymentPlansTable" name="ShareBasedPaymentPlansTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_SharePriceatGrantedDate" name="SharePriceatGrantedDate" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_SharebasedpaymentarrangementsAbstract" name="SharebasedpaymentarrangementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_SpecialtyAndOtherThinrolledProductsMember" name="SpecialtyAndOtherThinrolledProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_StartupAndDevelopmentCosts" name="StartupAndDevelopmentCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_SubsidiariesInCapitalControlRestrictionsCountriesMember" name="SubsidiariesInCapitalControlRestrictionsCountriesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_SwissGovernmentMember" name="SwissGovernmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_TradePayablesMember" name="TradePayablesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_TradeReceivablesLineItems" name="TradeReceivablesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_TradeReceivablesTable" name="TradeReceivablesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_TransactionWithNoncontrollingInterests" name="TransactionWithNoncontrollingInterests" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_TransportationIndustryAndOtherRolledProductsMember" name="TransportationIndustryAndOtherRolledProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_TwoLargestCustomersMember" name="TwoLargestCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_U.S.DDTLMember" name="U.S.DDTLMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_UnbilledToolingCostsMember" name="UnbilledToolingCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cstm_UnrealizedExchangeGainsLossesFromRemeasurementOfMonetaryAssetsAndLiabilitiesNet" name="UnrealizedExchangeGainsLossesFromRemeasurementOfMonetaryAssetsAndLiabilitiesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_UnrealizedGainsLossesOnChangeInFairValueOfDerivatives" name="UnrealizedGainsLossesOnChangeInFairValueOfDerivatives" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cstm_UnrealizedGainsLossesOnForeignCurrencyDerivativesNet" name="UnrealizedGainsLossesOnForeignCurrencyDerivativesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_UnrecognizedVariableConsiderationMember" name="UnrecognizedVariableConsiderationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_UnsecuredCreditFacilitySwitzerlandMember" name="UnsecuredCreditFacilitySwitzerlandMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_UnsecuredRevolvingCreditFacilitiesDueInTwoThousandTwentyOneMember" name="UnsecuredRevolvingCreditFacilitiesDueInTwoThousandTwentyOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cstm_WorkInProgressMember" name="WorkInProgressMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
