<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0407</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-06-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001888654</issuerCik>
        <issuerName>5E Advanced Materials, Inc.</issuerName>
        <issuerTradingSymbol>FEAM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001911490</rptOwnerCik>
            <rptOwnerName>Lim Sen Ming</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O 5E ADVANCED MATERIALS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>19500 STATE HIGHWAY 249 SUITE 125</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77070</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
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            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

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                <value>Common Stock</value>
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                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Virtova Capital Management Limited</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Director RSUs</value>
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            </securityTitle>
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                <footnoteId id="F1"/>
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                <value></value>
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                    <value>3029</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
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                </transactionAcquiredDisposedCode>
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            <exerciseDate>
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            <expirationDate>
                <footnoteId id="F1"/>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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                    <value>1587</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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            <exerciseDate>
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            <expirationDate>
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                <equitySwapInvolved>0</equitySwapInvolved>
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                <value></value>
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                <transactionShares>
                    <value>1300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
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                <transactionAcquiredDisposedCode>
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                <underlyingSecurityShares>
                    <value>1300</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                    <value>0</value>
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                    <value>D</value>
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        <derivativeTransaction>
            <securityTitle>
                <value>Director RSUs</value>
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                <footnoteId id="F4"/>
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                <value>2023-07-03</value>
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                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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                <transactionShares>
                    <value>1470</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <expirationDate>
                <footnoteId id="F4"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
                    <value>1470</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeTransaction>
            <securityTitle>
                <value>Director RSUs</value>
                <footnoteId id="F5"/>
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                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>3029</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F5"/>
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            <expirationDate>
                <footnoteId id="F5"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>3029</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each Director RSU represents a contingent right to receive one share of 5E Advanced Materials, Inc.'s (the &quot;Company&quot;) common stock (the &quot;common stock&quot;). The Director RSUs vest on July 3, 2023.</footnote>
        <footnote id="F2">Director RSUs convert into common stock on a one-for-one basis. On January 1, 2023, the reporting person was granted 1,587 Director RSUs, vesting on July 1, 2023.</footnote>
        <footnote id="F3">Director RSUs convert into common stock on a one-for-one basis. On July 1, 2022, the reporting person was granted 1,300 Director RSUs vesting on July 1, 2023.</footnote>
        <footnote id="F4">Director RSUs convert into common stock on a one-for-one basis. On October 1, 2022, the reporting person was granted 1,470 Director RSUs vesting on July 1, 2023.</footnote>
        <footnote id="F5">Director RSUs convert into common stock on a one-for-one basis. On June 30, 2023, the reporting person was granted 3,029 Director RSUs, vesting on July 1, 2023.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Paul Weibel as Attorney-in-Fact</signatureName>
        <signatureDate>2023-07-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
