-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 KEBE624R8ZV4hyCq7sXwjzUYvdQk7igGfGg8XvKHfyU+WC1ZLwiIqa8MhZfH1dXy
 rLNKj45Qmmlj8fj1yQ+mTQ==

<SEC-DOCUMENT>0001092349-07-000004.txt : 20071017
<SEC-HEADER>0001092349-07-000004.hdr.sgml : 20071017
<ACCEPTANCE-DATETIME>20071017194239
ACCESSION NUMBER:		0001092349-07-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20071015
FILED AS OF DATE:		20071017
DATE AS OF CHANGE:		20071017

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:		1047 N PARK ROAD
		CITY:			WYOMISSING
		STATE:			PA
		ZIP:			19610-1339
		BUSINESS PHONE:		6102082000

	MAIL ADDRESS:	
		STREET 1:		1047 N PARK ROAD
		CITY:			WYOMISSING
		STATE:			PA
		ZIP:			19610

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ANDERSON CARL G JR
		CENTRAL INDEX KEY:			0001092349

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05828
		FILM NUMBER:		071177482

	BUSINESS ADDRESS:	
		STREET 1:		2400 BERVILLE ROAD
		CITY:			READING
		STATE:			PA
		ZIP:			19605

	MAIL ADDRESS:	
		STREET 1:		2400 BERNVILLE ROAD
		CITY:			READING
		STATE:			PA
		ZIP:			19605
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-10-15</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001092349</rptOwnerCik>
            <rptOwnerName>ANDERSON CARL G JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CARPENTER TECHNOLOGY CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX 14662</rptOwnerStreet2>
            <rptOwnerCity>READING</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19612-4662</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>127.07</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-10-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1807</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-10-15</value>
            </exerciseDate>
            <expirationDate>
                <value>2017-10-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1807</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1807</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-10-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>354.1355</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>127.07</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>354.1355</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5549.3211</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-10-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>87.8563</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>128.05</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>87.8563</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5637.1809</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person was granted an option to purchase stock as part of his director's compensation with an effective grant date of 10/15/2007.</footnote>
        <footnote id="F2">Converts to common stock on a 1-for-1 basis</footnote>
        <footnote id="F3">Payable upon retirement</footnote>
        <footnote id="F4">Includes dividend equivalents</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Oliver C. Mitchell Jr./POA</signatureName>
        <signatureDate>2007-10-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>attach_1.htm
<DESCRIPTION>POWER OF ATTORNEY
<TEXT>
<HTML>
<HEAD>

<META NAME="Generator" CONTENT="Microsoft Word 97">
<TITLE>CARPENTER TECHNOLOGY CORPORATION</TITLE>
</HEAD>
<BODY>

<B><U><P ALIGN="CENTER">CARPENTER TECHNOLOGY CORPORATION</P>
</U><P ALIGN="CENTER"></P>
<U><P ALIGN="CENTER">POWER OF ATTORNEY</P>
</B></U><P ALIGN="CENTER"></P>
<P>&nbsp;</P>
<P>The undersigned hereby constitutes and appoints K. Douglas Ralph and Oliver C. Mitchell, Jr., and each of them, with full power to act without the other, as true and lawful attorneys-in-fact and agents to sign U.S. Securities and Exchange Commission Form 3, Initial Statement of Beneficial Ownership of Securities; Form 4, Statement of Changes in Beneficial Ownership; Form 5, Annual Statement of Changes in Beneficial Ownership, and Form 144, Notice of Proposed Sale of Securities, which Forms are required to be filed with the Securities and Exchange Commission under the Securities Exchange Act of 1934, as amended, to sign any and all amendments for such Forms 3, 4 and 5; and to file the same, together with all exhibits or other documents in connection therewith, with the Securities and Exchange Commission; granting to such attorneys-in-fact, and each of them, full power and authority to do and perform each and every act required to be done in connection therewith, as fully as the undersigned might or could d
o in person, hereby ratifying and confirming all that such attorneys-in-fact or any of them, or their substitutes, may do or cause to be done by virtue thereof.</P>
<P>I hereby approve, ratify, and confirm any action taken by my said attorneys and successors appointed hereunder, until this power is duly revoked under my hand.</P>
<P>IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney on the 27th day of September, 2007.</P>
<U><P>                                                                                </P>
</U><P>&#9;&#9;&#9;&#9;&#9;&#9;<U>/s/Carl G. Anderson, Jr.&#9;&#9;&#9;</P>
</U><P>&#9;&#9;&#9;&#9;&#9;&#9;Carl G. Anderson, Jr.</P>
<P>&#9;&#9;&#9;&#9;&#9;&#9;Director&#9;&#9;&#9;&#9;&#9;</P>
</BODY>
</HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
