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  <xsd:element abstract="true" id="kalu_ContributionPercentageDeterminationAxis" name="ContributionPercentageDeterminationAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ConvertibleRelatedTransactionsAxis" name="ConvertibleRelatedTransactionsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ConvertibleRelatedTransactionsDomain" name="ConvertibleRelatedTransactionsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DatePeriodAxis" name="DatePeriodAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DatePeriodDomain" name="DatePeriodDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_DebtInstrumentsConvertibleTermsOfConversionFeature" name="DebtInstrumentsConvertibleTermsOfConversionFeature" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_DecreaseIncreaseInInventoriesExcludingLifoChargesAndLowerOfCostOrMarketWriteDown" name="DecreaseIncreaseInInventoriesExcludingLifoChargesAndLowerOfCostOrMarketWriteDown" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="kalu_DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans" name="DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DefinedBenefitPlanNetPeriodicBenefitCostsAndChargesRelatingToOtherBenefitPlansAbstract" name="DefinedBenefitPlanNetPeriodicBenefitCostsAndChargesRelatingToOtherBenefitPlansAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_DefinedContributionPlanEmployerContributionPercentage" name="DefinedContributionPlanEmployerContributionPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DefinedContributionPlansTable" name="DefinedContributionPlansTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DerivativeFinancialInstrumentsAndRelatedHedgingProgramsTextualsAbstract" name="DerivativeFinancialInstrumentsAndRelatedHedgingProgramsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DerivativeSwapTypeFixedPricePurchaseMember" name="DerivativeSwapTypeFixedPricePurchaseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DerivativeSwapTypeFixedPriceSalesMember" name="DerivativeSwapTypeFixedPriceSalesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_DisclosureOfShortTermIncentiveCompensationChargesTableTextBlock" name="DisclosureOfShortTermIncentiveCompensationChargesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_DomesticTax" name="DomesticTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="kalu_EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsIncludingInterestAndPenalty" name="EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsIncludingInterestAndPenalty" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ElectricityMember" name="ElectricityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_EmployeeAxis" name="EmployeeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_EmployeeDomain" name="EmployeeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_EquityGranteeTypeAxis" name="EquityGranteeTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_EquityGranteeTypeDomain" name="EquityGranteeTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_EquityLegalPanAxis" name="EquityLegalPanAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_EquityLegalPlanDomain" name="EquityLegalPlanDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_EstimatedAnnualContributionToPensionAndOtherPostretirementBenefitPlans" name="EstimatedAnnualContributionToPensionAndOtherPostretirementBenefitPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_EurosMember" name="EurosMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ExcessTaxBenefitFromEmployeeRestrictedStockResultingInNetOperatingLossCarryForwards" name="ExcessTaxBenefitFromEmployeeRestrictedStockResultingInNetOperatingLossCarryForwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_ExecutiveOfficersAndSeniorManagementMember" name="ExecutiveOfficersAndSeniorManagementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ExercisePriceOfCallOption" name="ExercisePriceOfCallOption" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_ExpectedPeriodOfNotResumingUseOfEquityMethodOfAccounting" name="ExpectedPeriodOfNotResumingUseOfEquityMethodOfAccounting" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_ExpectedPeriodRelatedToExcessEnvironmentalCostsOverCurrentAccruals" name="ExpectedPeriodRelatedToExcessEnvironmentalCostsOverCurrentAccruals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_ExpectedPeriodRelatedToRemediationExpendituresForEnvironmentalContingencies" name="ExpectedPeriodRelatedToRemediationExpendituresForEnvironmentalContingencies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_ExpectedPeriodWhichUnrecognizedTaxBenefitsWillBeReduced" name="ExpectedPeriodWhichUnrecognizedTaxBenefitsWillBeReduced" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_FabricatedProductsMember" name="FabricatedProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_FabricatedProductsShipmentsContainingFixedPriceTerms" name="FabricatedProductsShipmentsContainingFixedPriceTerms" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInEarnings" name="FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInEarnings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="kalu_FirmPriceCustomerSalesContractsContainingPriceRiskOnAnticipatedPurchasesOfPrimaryAluminum" name="FirmPriceCustomerSalesContractsContainingPriceRiskOnAnticipatedPurchasesOfPrimaryAluminum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_FixedChargeCoverageRatio" name="FixedChargeCoverageRatio" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_FixedRateAndConcurrentMatchMember" name="FixedRateAndConcurrentMatchMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_FixedRateMember" name="FixedRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_FlorenceAlabamaFacilityMember" name="FlorenceAlabamaFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_GoodwillAndIntangibleAssetsTextualsAbstract" name="GoodwillAndIntangibleAssetsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_GuarantorAndNonGuarantorFinancialStatementAbstract" name="GuarantorAndNonGuarantorFinancialStatementAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_HedgesRelatingToNotesMember" name="HedgesRelatingToNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_HiredOnOrAfterJanuaryOneTwoThousandFourMember" name="HiredOnOrAfterJanuaryOneTwoThousandFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_HiredPriorToJanuaryOneTwoThousandFourMember" name="HiredPriorToJanuaryOneTwoThousandFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_HourlyBargainingUnitEmployeesMember" name="HourlyBargainingUnitEmployeesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_IdledAssetsAxis" name="IdledAssetsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_IdledAssetsDomain" name="IdledAssetsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_IdledEquipment" name="IdledEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_IncentiveCompensationPlanAbstract" name="IncentiveCompensationPlanAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_IncomeTaxMattersLineItems" name="IncomeTaxMattersLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_IncomeTaxMattersTextualsAbstract" name="IncomeTaxMattersTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_IncreaseDecreaseInEquityRelatingToSaleOfCommonSharesOwnedByUnionVeba" name="IncreaseDecreaseInEquityRelatingToSaleOfCommonSharesOwnedByUnionVeba" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="kalu_IncreaseDecreaseInUnrecognizedTaxBenefitInterestAndPenaltyExpense" name="IncreaseDecreaseInUnrecognizedTaxBenefitInterestAndPenaltyExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_IncreaseInPostretirementMedicalPlanAsset" name="IncreaseInPostretirementMedicalPlanAsset" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="kalu_IntercompanyPayableCurrent" name="IntercompanyPayableCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="kalu_IntercompanyPayableNoncurrent" name="IntercompanyPayableNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="kalu_IntercompanyReceivablesCurrent" name="IntercompanyReceivablesCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="kalu_IntercompanyReceivablesNoncurrent" name="IntercompanyReceivablesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="kalu_IssuanceOfCommonSharesToDirectors" name="IssuanceOfCommonSharesToDirectors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="kalu_IssuanceOfCommonSharesToDirectorsShares" name="IssuanceOfCommonSharesToDirectorsShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_LiquidityRequirement" name="LiquidityRequirement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_LondonOntarioFacilityMember" name="LondonOntarioFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_MarginDepositsFromCounterparties" name="MarginDepositsFromCounterparties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_MidwestPremiumSwapContractsMember" name="MidwestPremiumSwapContractsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_MonthlyContributionsPerHourWorkedByEachBargainingUnitEmployee" name="MonthlyContributionsPerHourWorkedByEachBargainingUnitEmployee" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_MultiemployerPensionPlansMember" name="MultiemployerPensionPlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_MultiemployerPensionPlansTable" name="MultiemployerPensionPlansTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_NaturalGasMember" name="NaturalGasMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_NetAssetInRespectOfVebas" name="NetAssetInRespectOfVebas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="kalu_NetLiabilityInRespectOfVeba" name="NetLiabilityInRespectOfVeba" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_NetPeriodicBenefitCostsAndChargesRelatingToOtherBenefitPlansLineItems" name="NetPeriodicBenefitCostsAndChargesRelatingToOtherBenefitPlansLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_NewAccountingPronouncementsPolicyTextBlock" name="NewAccountingPronouncementsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_NewarkOhioAndSpokaneWashingtonFacilitiesMember" name="NewarkOhioAndSpokaneWashingtonFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_NicholsPromissoryNoteMember" name="NicholsPromissoryNoteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_NoContributionsRequiredMember" name="NoContributionsRequiredMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_NonEmployeeDirectorsMember" name="NonEmployeeDirectorsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_NumberOfCommonShareReceivedByEmployeeOnVestingOfRestrictedStockUnit" name="NumberOfCommonShareReceivedByEmployeeOnVestingOfRestrictedStockUnit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_NumberOfConsecutiveTradingDaysWithinCalendarQuarter" name="NumberOfConsecutiveTradingDaysWithinCalendarQuarter" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_NumberOfProductionFacilities" name="NumberOfProductionFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_NumberOfTradingDaysWithin30ConsecutiveTradingDays" name="NumberOfTradingDaysWithin30ConsecutiveTradingDays" nillable="true" substitutionGroup="xbrli:item" type="us-types:durationStringItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_NumberOfTrustees" name="NumberOfTrustees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_OnOrAfterJune12015ButPriorToJune12016Member" name="OnOrAfterJune12015ButPriorToJune12016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_OnOrAfterJune12016Member" name="OnOrAfterJune12016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_OptionPremiumsPaidCurrent" name="OptionPremiumsPaidCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="kalu_OptionPremiumsPaidNonCurrent" name="OptionPremiumsPaidNonCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="kalu_OptionPremiumsReceived" name="OptionPremiumsReceived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="kalu_OptionPremiumsReceivedNoncurrent" name="OptionPremiumsReceivedNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_OtherAccruedLiabilitiesAbstract" name="OtherAccruedLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_OtherAccruedLiability" name="OtherAccruedLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="kalu_OtherComprehensiveIncomeLossDisclosureTextBlock" name="OtherComprehensiveIncomeLossDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_OtherKeyEmployeesMember" name="OtherKeyEmployeesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_OtherLongTermLiabilities" name="OtherLongTermLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_OtherNotesPayableTable" name="OtherNotesPayableTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_OtherOperatingIncomeLoss" name="OtherOperatingIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="kalu_Others" name="Others" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="kalu_PaymentsForRepurchaseOfCommonStockToCoverEmployeesTaxWithholdingsUponVestingOfNonVestedShares" name="PaymentsForRepurchaseOfCommonStockToCoverEmployeesTaxWithholdingsUponVestingOfNonVestedShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_PensionAndOtherPostretirementBenefitPlanTypeAxis" name="PensionAndOtherPostretirementBenefitPlanTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_PensionAndOtherPostretirementBenefitPlanTypeDomain" name="PensionAndOtherPostretirementBenefitPlanTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PercentAllocationOfTotalContributionBetweenVebas" name="PercentAllocationOfTotalContributionBetweenVebas" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PercentOfEligibleMachineryAndEquipmentForBorrowingBase" name="PercentOfEligibleMachineryAndEquipmentForBorrowingBase" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_PercentageOfEligibleAccountsReceivableForBorrowingBase" name="PercentageOfEligibleAccountsReceivableForBorrowingBase" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_PercentageOfEligibleInventoryForBorrowingBase" name="PercentageOfEligibleInventoryForBorrowingBase" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_PercentageOfNaturalGasPurchasesForWhichCompanysExposureToFluctuationsInGasPricesHaveBeenReduced" name="PercentageOfNaturalGasPurchasesForWhichCompanysExposureToFluctuationsInGasPricesHaveBeenReduced" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_PercentageOfNetOrderlyLiquidationValueOfEligibleInventory" name="PercentageOfNetOrderlyLiquidationValueOfEligibleInventory" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_PercentageOfPrincipalAmountOfNotes" name="PercentageOfPrincipalAmountOfNotes" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_PerformanceSharesMember" name="PerformanceSharesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PostretirementMedicalPlanContributionObligation" name="PostretirementMedicalPlanContributionObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="kalu_PostretirementMedicalPlanContributionObligationPercentage" name="PostretirementMedicalPlanContributionObligationPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PotentialAdditionalEnvironmentalCosts" name="PotentialAdditionalEnvironmentalCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="kalu_PrepaidExpensesAndOtherCurrentAssetsTableTextBlock" name="PrepaidExpensesAndOtherCurrentAssetsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PriceAsPercentageOfPriceOfPrincipalAmountOfNotesPlusAnyAccruedAndUnpaidInterestForRepurchaseOfNotes" name="PriceAsPercentageOfPriceOfPrincipalAmountOfNotesPlusAnyAccruedAndUnpaidInterestForRepurchaseOfNotes" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_PrincipalAmountCarryingAmountAndInterestExpenseOfNotesAbstract" name="PrincipalAmountCarryingAmountAndInterestExpenseOfNotesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PrincipalAmountCarryingAmountAndInterestExpenseOfNotesTableTextBlock" name="PrincipalAmountCarryingAmountAndInterestExpenseOfNotesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PrincipalAmountInConversionFeature" name="PrincipalAmountInConversionFeature" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_PrincipalCarryingAmountAndInterestExpenseLineItems" name="PrincipalCarryingAmountAndInterestExpenseLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_PrincipalCarryingAmountAndInterestExpenseOfNotesTable" name="PrincipalCarryingAmountAndInterestExpenseOfNotesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_PriorPeriodReclassificationAdjustmentBalanceSheet" name="PriorPeriodReclassificationAdjustmentBalanceSheet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_PriorToJune12015Member" name="PriorToJune12015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ProductionFacilitiesAxis" name="ProductionFacilitiesAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ProductionFacilitiesDomain" name="ProductionFacilitiesDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ReclassificationAdjustmentsBeforeTaxAbstract" name="ReclassificationAdjustmentsBeforeTaxAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ReclassificationAdjustmentsIncomeTaxExpenseBenefitAbstract" name="ReclassificationAdjustmentsIncomeTaxExpenseBenefitAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ReclassificationAdjustmentsNetOfTaxAbstract" name="ReclassificationAdjustmentsNetOfTaxAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ReclassificationRelatingToDividendsOnUnvestedEquityAwards" name="ReclassificationRelatingToDividendsOnUnvestedEquityAwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_RemainderOfCurrentYearMember" name="RemainderOfCurrentYearMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ReorganizationValuePerShare" name="ReorganizationValuePerShare" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_RestrictedCommonStockOwnedByUnionVebaShares" name="RestrictedCommonStockOwnedByUnionVebaShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_RestrictedStockAndRestrictedStockUnitsMember" name="RestrictedStockAndRestrictedStockUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_RevolvingCreditFacilityDisclosureTextBlock" name="RevolvingCreditFacilityDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SalariedAndCertainHourlyEmployeeMember" name="SalariedAndCertainHourlyEmployeeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SalariedEmployeeMember" name="SalariedEmployeeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SalariedVebaMember" name="SalariedVebaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ScheduleOfCommonSharesSoldByUnionVebaTableTextBlock" name="ScheduleOfCommonSharesSoldByUnionVebaTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassAbstract" name="ScheduleOfEarningsPerShareBasicAndDilutedByCommonClassAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ScheduleOfLiabilitiesNoncurrentTableTextBlock" name="ScheduleOfLiabilitiesNoncurrentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_ScheduleOfNetPeriodicBenefitCostsAndChargesRelatingToOtherBenefitPlansTable" name="ScheduleOfNetPeriodicBenefitCostsAndChargesRelatingToOtherBenefitPlansTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ScheduleofcondensedfinancialstatementsTableTextBlock" name="ScheduleofcondensedfinancialstatementsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_SelfInsurancePolicyTextBlock" name="SelfInsurancePolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses" name="SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SellingAdministrativeResearchAndDevelopmentAndGeneralExpensesMember" name="SellingAdministrativeResearchAndDevelopmentAndGeneralExpensesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ShareBasedCompensationArrangementByShareBasedPaymentsAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentsAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_ShortTermIncentiveCompensationExpense" name="ShortTermIncentiveCompensationExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_StartingJulyTwoThousandFifteenMember" name="StartingJulyTwoThousandFifteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_StartingJulyTwoThousandTenUntilJulyTwoThousandFifteenMember" name="StartingJulyTwoThousandTenUntilJulyTwoThousandFifteenMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_StatementOfConsolidatedComprehensiveIncomeAbstract" name="StatementOfConsolidatedComprehensiveIncomeAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_StockPricePerShareThresholdForConversionOfNotes" name="StockPricePerShareThresholdForConversionOfNotes" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_StockTransferRestrictionAgreementAxis" name="StockTransferRestrictionAgreementAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_StockTransferRestrictionAgreementDomain" name="StockTransferRestrictionAgreementDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SubsequentEventsTextualsAbstract" name="SubsequentEventsTextualsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SubsidiaryOneMember" name="SubsidiaryOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SubsidiaryTwoMember" name="SubsidiaryTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SummaryOfRealizedAndUnrealizedGainsLossesAbstract" name="SummaryOfRealizedAndUnrealizedGainsLossesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_SummaryOfRealizedAndUnrealizedGainsLossesTableTextBlock" name="SummaryOfRealizedAndUnrealizedGainsLossesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SummaryOfSignificantAccountingPoliciesAbstract" name="SummaryOfSignificantAccountingPoliciesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_SupplementalBalanceSheetInformationAbstract" name="SupplementalBalanceSheetInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_TaxEffectOnCommonStockSoldByUnionVebaOrOnWhichRestrictionWasLifted" name="TaxEffectOnCommonStockSoldByUnionVebaOrOnWhichRestrictionWasLifted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_TaxProvisionAbstract" name="TaxProvisionAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_TimePeriodWithinWhichCompanysRecordedEstimateOfItsObligationMayChange" name="TimePeriodWithinWhichCompanysRecordedEstimateOfItsObligationMayChange" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_TradeReceivablesTableTextBlock" name="TradeReceivablesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_TrademarkAndTradeNameMember" name="TrademarkAndTradeNameMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_TrusteesAxis" name="TrusteesAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_TrusteesDomain" name="TrusteesDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_TulsaOklahomaFacilityMember" name="TulsaOklahomaFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_TypesOfContributionsAxis" name="TypesOfContributionsAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_TypesOfContributionsDomain" name="TypesOfContributionsDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_UnionVebaMember" name="UnionVebaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_UnitedStatesMember" name="UnitedStatesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_UnrealizedGainLossOnDerivativesRelatingToNotes" name="UnrealizedGainLossOnDerivativesRelatingToNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="kalu_UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent" name="UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_UswAppointedMember" name="UswAppointedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_VariableCashContributionMember" name="VariableCashContributionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_VebaMember" name="VebaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_VestedStockAbstract" name="VestedStockAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_WeightedAverageCreditAdjustedRiskFreeRate" name="WeightedAverageCreditAdjustedRiskFreeRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="kalu_WeightedAveragePricePerShareSoldByUnionVeba" name="WeightedAveragePricePerShareSoldByUnionVeba" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="kalu_Workerscompensationliabilityundiscounted" name="Workerscompensationliabilityundiscounted" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="kalu_YearOneMember" name="YearOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="kalu_YearTwoMember" name="YearTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
