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  <xs:element id="cenx_DebtInstrumentInterestRateStatedPercentageAdditionalNotesOrCash" abstract="false" name="DebtInstrumentInterestRateStatedPercentageAdditionalNotesOrCash" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="cenx_FiscalYearEnd" abstract="false" name="FiscalYearEnd" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cenx_PercentageOfForeignWorkForceCoveredUnderNewLaborAgreement" abstract="false" name="PercentageOfForeignWorkForceCoveredUnderNewLaborAgreement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="cenx_RevolvingCreditFacilityPortionSubjectToLIBORRateMember" abstract="true" name="RevolvingCreditFacilityPortionSubjectToLIBORRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="cenx_LineofCreditFacilityRemainingBorrowingCapacityNetofLettersofCredit" abstract="false" name="LineofCreditFacilityRemainingBorrowingCapacityNetofLettersofCredit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_SuretyBondsWorkersCompInsuranceFairValueDisclosure" abstract="false" name="SuretyBondsWorkersCompInsuranceFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_PaymentsforProceedsfromIntercompanyTransactionsInvestingActivities" abstract="false" name="PaymentsforProceedsfromIntercompanyTransactionsInvestingActivities" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_PerformancebasedShareExpense" abstract="false" name="PerformancebasedShareExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_IncomeLossBeforeIncomeTaxesAndEquityMethodInvestmentsInNoncontrollingInterest" abstract="false" name="IncomeLossBeforeIncomeTaxesAndEquityMethodInvestmentsInNoncontrollingInterest" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_ContingentObligationDerivativeAsset" abstract="false" name="ContingentObligationDerivativeAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_ValuationAllowanceDeferredTaxAssetReleaseofValuationAllowance" abstract="false" name="ValuationAllowanceDeferredTaxAssetReleaseofValuationAllowance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_DebtForeignNoncurrent" abstract="false" name="DebtForeignNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_NetIncomePercentageAllocatedToCommonShareholders" abstract="false" name="NetIncomePercentageAllocatedToCommonShareholders" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="cenx_SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofAwardTypes" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardNumberofAwardTypes" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="cenx_NetIncomeLossAvailabletoCommonStockholdersBasicandDiluted" abstract="false" name="NetIncomeLossAvailabletoCommonStockholdersBasicandDiluted" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_ContingentObligationAccruedInterest" abstract="false" name="ContingentObligationAccruedInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_SegmentReportingCorporateUnallocatedAssets" abstract="false" name="SegmentReportingCorporateUnallocatedAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_LitigationSettlementPeriod" abstract="false" name="LitigationSettlementPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="cenx_OtherMember" abstract="true" name="OtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="cenx_NordpoolPowerPriceSwapMember" abstract="true" name="NordpoolPowerPriceSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="cenx_IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments" abstract="false" name="IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_MeasurementDateBenefitObligation" abstract="false" name="MeasurementDateBenefitObligation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:dateItemType"/>
  <xs:element id="cenx_FXSwapMember" abstract="true" name="FXSwapMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="cenx_LaborCommitmentsAbstract" abstract="true" name="LaborCommitmentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="cenx_EOnContingentObligationMember" abstract="true" name="EOnContingentObligationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="cenx_DebtInstrumentInterestRateStatedPercentageCash" abstract="false" name="DebtInstrumentInterestRateStatedPercentageCash" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="cenx_PensionContributionsAboveRequiredMinimumTotal" abstract="false" name="PensionContributionsAboveRequiredMinimumTotal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="cenx_ShortTermPowerAgreementSupplyFromThirdPartyPercentage" abstract="false" name="ShortTermPowerAgreementSupplyFromThirdPartyPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="cenx_GrundartangiMember" abstract="true" name="GrundartangiMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="cenx_SeniorSecuredNotesDueJune012021Member" abstract="true" name="SeniorSecuredNotesDueJune012021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="cenx_ServiceBasedShareAwardsMember" abstract="true" name="ServiceBasedShareAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
</xs:schema>
