<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019d499b-f71f-78ec-8375-d04002962452,g:ec9ffd89-1e20-4b97-a3e4-7a776524af98-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.cmc.com/role/Cover" xlink:type="simple" xlink:href="cmc-20260625.xsd#Cover"/>
  <link:presentationLink xlink:role="http://www.cmc.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019d499b-f71f-7baf-ac68-6609661bd544" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_DocumentType_019d499b-f71f-7baf-ac68-6609661bd544" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_019d499b-f71f-7948-a454-522b9dca25e3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_DocumentPeriodEndDate_019d499b-f71f-7948-a454-522b9dca25e3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019d499b-f71f-70ff-b991-a904d27ea9bf" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityRegistrantName_019d499b-f71f-70ff-b991-a904d27ea9bf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_019d499b-f71f-72db-a4b2-0a22459501bf" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityIncorporationStateCountryCode_019d499b-f71f-72db-a4b2-0a22459501bf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_019d499b-f71f-7287-ba7a-c1dca568ac5d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityFileNumber_019d499b-f71f-7287-ba7a-c1dca568ac5d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_019d499b-f71f-705e-9184-2f66cbf68e53" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityTaxIdentificationNumber_019d499b-f71f-705e-9184-2f66cbf68e53" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019d499b-f71f-7221-9b87-b4c7d6dca97e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityAddressAddressLine1_019d499b-f71f-7221-9b87-b4c7d6dca97e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019d499b-f71f-7df6-be2c-d12a4fcc5ffe" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityAddressCityOrTown_019d499b-f71f-7df6-be2c-d12a4fcc5ffe" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019d499b-f71f-72be-b00d-6a25f20e7a2d" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityAddressStateOrProvince_019d499b-f71f-72be-b00d-6a25f20e7a2d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019d499b-f71f-7d16-99c9-2f7c487635e4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityAddressPostalZipCode_019d499b-f71f-7d16-99c9-2f7c487635e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019d499b-f71f-7b10-b3b9-b476c8e8d629" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_CityAreaCode_019d499b-f71f-7b10-b3b9-b476c8e8d629" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019d499b-f71f-7464-b5e3-6dac3a252396" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_LocalPhoneNumber_019d499b-f71f-7464-b5e3-6dac3a252396" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_019d499b-f71f-746b-94e1-ec61abcafa71" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_WrittenCommunications_019d499b-f71f-746b-94e1-ec61abcafa71" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_019d499b-f71f-7743-8e2e-e4ecd5ddf1dd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_SolicitingMaterial_019d499b-f71f-7743-8e2e-e4ecd5ddf1dd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_019d499b-f71f-7d45-9429-2d2cf9a4b7cf" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_PreCommencementTenderOffer_019d499b-f71f-7d45-9429-2d2cf9a4b7cf" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_019d499b-f71f-7d21-b116-b4469682773f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_019d499b-f71f-7d21-b116-b4469682773f" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_019d499b-f71f-7c32-9a71-5d499078b4a4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_Security12bTitle_019d499b-f71f-7c32-9a71-5d499078b4a4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_019d499b-f71f-73b2-ab25-c3e47a00466e" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_TradingSymbol_019d499b-f71f-73b2-ab25-c3e47a00466e" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_019d499b-f71f-7aed-b8fb-c022dc6fd198" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_SecurityExchangeName_019d499b-f71f-7aed-b8fb-c022dc6fd198" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019d499b-f71f-77ed-8ea7-f568a2e0a0e0" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityEmergingGrowthCompany_019d499b-f71f-77ed-8ea7-f568a2e0a0e0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019d499b-f71f-7dc9-8c6e-d5fc89d5c517" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_EntityCentralIndexKey_019d499b-f71f-7dc9-8c6e-d5fc89d5c517" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019d499b-f71f-74b4-bb53-f2a72e4f37b3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_019d499b-f71f-75f7-9036-251a2c84e717" xlink:to="loc_dei_AmendmentFlag_019d499b-f71f-74b4-bb53-f2a72e4f37b3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
