<SEC-DOCUMENT>0001218733-12-000005.txt : 20120904
<SEC-HEADER>0001218733-12-000005.hdr.sgml : 20120903
<ACCEPTANCE-DATETIME>20120904180831
ACCESSION NUMBER:		0001218733-12-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120830
FILED AS OF DATE:		20120904
DATE AS OF CHANGE:		20120904

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KAROL STEVEN E
		CENTRAL INDEX KEY:			0001218733

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05828
		FILM NUMBER:		121071914

	MAIL ADDRESS:	
		STREET 1:		C/O STOCKERYALE INC
		STREET 2:		32 HAMPSHIRE RD
		CITY:			SALEM
		STATE:			NH
		ZIP:			03079

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CARPENTER TECHNOLOGY CORP
		CENTRAL INDEX KEY:			0000017843
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
		IRS NUMBER:				230458500
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		2 MERIDIAN BOULEVARD
		CITY:			WYOMISSING
		STATE:			PA
		ZIP:			19612
		BUSINESS PHONE:		6102082000

	MAIL ADDRESS:	
		STREET 1:		PO BOX 14662
		CITY:			READING
		STATE:			PA
		ZIP:			19612-4662
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-08-30</periodOfReport>

    <issuer>
        <issuerCik>0000017843</issuerCik>
        <issuerName>CARPENTER TECHNOLOGY CORP</issuerName>
        <issuerTradingSymbol>CRS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001218733</rptOwnerCik>
            <rptOwnerName>KAROL STEVEN E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CARPENTER TECHNOLOGY CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX 14662</rptOwnerStreet2>
            <rptOwnerCity>READING</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19612</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2012-08-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1797428</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>181002</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>857124</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Described in Explanation of Responses</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">See (1) below</footnote>
    </footnotes>

    <remarks>(1) The reporting person is an affiliate of Watermill-Toolrock Enterprises, LLC, Watermill-Toolrock Partners, LP, and Watermill-Toolrock Partners II, LP (collectively, the &quot;Watermill Funds&quot;), which are affiliates of Toolrock Investments, LLC (&quot;Toolrock&quot;). In connection with the acquisition of Latrobe Specialty Metals, Inc. (&quot;Latrobe&quot;) pursuant to an agreement and plan of merger entered into by the Issuer on June 20, 2011 (the &quot;Merger Agreement&quot;) and closed on February 29, 2012 (the &quot;Closing Date&quot;), Toolrock received 7,666,028 shares of the common stock of the Issuer in exchange for all of Toolrock's common and preferred shares of Latrobe. After the Closing Date, Toolrock conducted a pro-rata, in-kind distribution of its 7,666,028 shares of common stock of the Issuer to its members (the &quot;Toolrock Distribution&quot;).  As a result of the Toolrock Distribution, the Watermill Funds, directly, and the reporting person, indirectly, was the beneficial owner of 2,835,554  shares of common stock of the Issuer.  On August 30, 2012, pursuant to a registration statement filed and automatically effective on June 14, 2012, the Watermill Funds conducted an in-kind distribution of 2,304,785 shares of common stock of the Issuer to their respective members and partners (the &quot;Watermill Distribution&quot;).  In the Watermill Distribution, (i) persons and entities not affiliated with the reporting person received 1,797,428 shares of common stock of the Issuer, (ii) the reporting person received 181,002 shares of common stock of the Issuer and (iii) HMK Enterprises, Inc. and SEK Limited Partnership, both affiliates of the reporting person, received an aggregate of 326,355 shares of common stock of the Issuer.  Following the Watermill Distribution, the reporting person beneficially owns 1,038,126 shares of common stock of the Issuer, 181,002 of which are owned directly while the remaining 857,124 are owned indirectly.</remarks>

    <ownerSignature>
        <signatureName>James D. Dee/POA</signatureName>
        <signatureDate>2012-09-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
