<SEC-DOCUMENT>0001209191-20-012978.txt : 20200226
<SEC-HEADER>0001209191-20-012978.hdr.sgml : 20200226
<ACCEPTANCE-DATETIME>20200226161328
ACCESSION NUMBER:		0001209191-20-012978
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200224
FILED AS OF DATE:		20200226
DATE AS OF CHANGE:		20200226

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WETHERBEE ROBERT S
		CENTRAL INDEX KEY:			0001572385

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12001
		FILM NUMBER:		20655817

	MAIL ADDRESS:	
		STREET 1:		MINERALS TECHNOLOGIES INC
		STREET 2:		622 THIRD AVENUE 38TH FL
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALLEGHENY TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0001018963
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL PIPE & TUBES [3317]
		IRS NUMBER:				251792394
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1000 SIX PPG PLACE
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15222
		BUSINESS PHONE:		4123942800

	MAIL ADDRESS:	
		STREET 1:		100 SIX PPG PLACE
		CITY:			PITTSBURGH
		STATE:			PA
		ZIP:			15222

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLEGHENY TELEDYNE INC
		DATE OF NAME CHANGE:	19960716
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-02-24</periodOfReport>

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    <issuer>
        <issuerCik>0001018963</issuerCik>
        <issuerName>ALLEGHENY TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>ATI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001572385</rptOwnerCik>
            <rptOwnerName>WETHERBEE ROBERT S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1000 SIX PPG PLACE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PITTSBURGH</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>15222</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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            <securityTitle>
                <value>Common Stock, $0.10 par value per share</value>
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            <transactionDate>
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            <deemedExecutionDate></deemedExecutionDate>
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            <transactionAmounts>
                <transactionShares>
                    <value>48738</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>160288.3409</value>
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            <ownershipNature>
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                    <footnoteId id="F4"/>
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                <transactionPricePerShare>
                    <value>19.44</value>
                    <footnoteId id="F3"/>
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                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
                    <value>135734.3409</value>
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                <value>Common Stock, $0.10 par value per share</value>
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                    <value>61728</value>
                    <footnoteId id="F5"/>
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    <footnotes>
        <footnote id="F1">Settlement of performance-vested restricted stock units that were granted in 2017, the vesting of which was contingent upon the Issuer's achievement of specified performance criteria during the period form January 1, 2017 through December 31, 2019 (the &quot;2017-2019 PSUs&quot;). The shares underlying the 2017-2019 PSUs became payable as of February 24, 2020 following certification of the Issuer's achievement of such performance criteria by the Personnel and Compensation Committee of the Issuer's Board of Directors.</footnote>
        <footnote id="F2">Shares withheld for payment of taxes in connection with the February 24, 2020 settlement of the 2017-2019 PSUs.</footnote>
        <footnote id="F3">Represents the average of the high and low trading prices for one share of the Issuer's common stock on the New York Stock Exchange on February 24, 2020.</footnote>
        <footnote id="F4">Shares withheld for payment of taxes on restricted stock units awarded on February 23, 2017. One-third of such restricted stock units vested by their terms on February 24, 2020.</footnote>
        <footnote id="F5">Award of restricted stock units, which are settled in shares of stock upon vesting.  The award vests in three equal annual installments on each of the first three anniversaries of the grant date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Elliot S. Davis, Attorney-in-Fact for Robert S. Wetherbee</signatureName>
        <signatureDate>2020-02-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
