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        <filerInfo>
            <filer>
                <filerCredentials>
                    <cik>0001743079</cik>
                    <ccc>XXXXXXXX</ccc>
                </filerCredentials>
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            <liveTestFlag>LIVE</liveTestFlag>



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            <issuerCik>0000017843</issuerCik>
            <issuerName>CARPENTER TECHNOLOGY CORPORATION</issuerName>
            <secFileNumber>001-05828</secFileNumber>
            <issuerAddress>
                <ns2:street1>1735 Market Street</ns2:street1>
                <ns2:street2>15th Floor</ns2:street2>
                <ns2:city>Philadelphia</ns2:city>
                <ns2:stateOrCountry>PA</ns2:stateOrCountry>
                <ns2:zipCode>19103</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>610-208-2000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>RAMIN YOUNESSI</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Director</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>290</noOfUnitsSold>
            <aggregateMarketValue>53313.69</aggregateMarketValue>
            <noOfUnitsOutstanding>49844858</noOfUnitsOutstanding>
            <approxSaleDate>11/20/2024</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>11/19/2024</acquiredDate>
            <natureOfAcquisitionTransaction>Exercised Shares</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>290</amountOfSecuritiesAcquired>
            <paymentDate>11/19/2024</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RAMIN YOUNESSI</name>
                <address>
                    <ns2:street1>1735 Market Street</ns2:street1>
                    <ns2:street2>15th Floor</ns2:street2>
                    <ns2:city>Philadelphia</ns2:city>
                    <ns2:stateOrCountry>PA</ns2:stateOrCountry>
                    <ns2:zipCode>19103</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>11/19/2024</saleDate>
            <amountOfSecuritiesSold>422</amountOfSecuritiesSold>
            <grossProceeds>76464.92</grossProceeds>
        </securitiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>RAMIN YOUNESSI</name>
                <address>
                    <ns2:street1>1735 Market Street</ns2:street1>
                    <ns2:street2>15th Floor</ns2:street2>
                    <ns2:city>Philadelphia</ns2:city>
                    <ns2:stateOrCountry>PA</ns2:stateOrCountry>
                    <ns2:zipCode>19103</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>08/21/2024</saleDate>
            <amountOfSecuritiesSold>3234</amountOfSecuritiesSold>
            <grossProceeds>464069.30</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>11/20/2024</noticeDate>
            <planAdoptionDates/>
            <signature>/s/ Ramin Younessi</signature>
        </noticeSignature>
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144
0001743079
XXXXXXXX
LIVE
0000017843
CARPENTER TECHNOLOGY CORPORATION
001-05828
1735 Market Street
15th Floor
Philadelphia
PA
19103
610-208-2000
RAMIN YOUNESSI
Director
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
290
53313.69
49844858
11/20/2024
NYSE
Common
11/19/2024
Exercised Shares
Issuer
N
290
11/19/2024
Cash
N
RAMIN YOUNESSI
1735 Market Street
15th Floor
Philadelphia
PA
19103
Common
11/19/2024
422
76464.92
RAMIN YOUNESSI
1735 Market Street
15th Floor
Philadelphia
PA
19103
Common
08/21/2024
3234
464069.30
11/20/2024
/s/ Ramin Younessi