- Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Expires: November 30, 2011 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Ziolkowski Andrew T

2. Date of Event Requiring Statement (MM/DD/YYYY) 2/29/2012

3. Issuer Name and Ticker or Trading Symbol

CARPENTER TECHNOLOGY CORP [CRS]

(Last) (First) (Middle)

CARPENTER TECHNOLOGY CORRPORATION, PO BOX 14662

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director _____ 10% Owner
___ X ___ Officer (give title below) _____ Other (specify below)
Sr. VP Strategic Integration /

(Street)

READING, PA 19612-4662

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	16315 ⁽¹⁾	D
Common Stock	9.8 ⁽²⁾	I	Custodial Account
Common Stock	6434.755	I	By 401k Plan

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Employee Stock Option (Right to Buy)	7/29/2010	7/29/2019	Common Sotck	3559	$17.29	D
Employee Stock Option (Right to Buy)	7/29/2011	7/29/2019	Common Stock	3558	$17.29	D
Employee Stock Option (Right to Buy)	7/29/2012	7/29/2019	Common Stock	3558	$17.29	D
Employee Stock Option (Right to Buy)	7/30/2011	7/30/2020	Common Stock	2029	$34.95	D
Employee Stock Option (Right to Buy)	7/30/2012	7/30/2020	Common Stock	2028	$34.95	D
Employee Stock Option (Right to Buy)	7/30/2013	7/30/2020	Common Stock	2028	$34.95	D
Employee Stock Option (Right to Buy)	7/28/2012	7/28/2021	Common Stock	1030	$56.52	D
Employee Stock Option (Right to Buy)	7/28/2013	7/28/2021	Common Stock	1029	$56.52	D
Employee Stock Option (Right to Buy)	7/28/2014	7/28/2021	Common Stock	1029	$56.52	D

Explanation of Responses:
( 1)	Includes restricted stock units granted under the Carpenter Technology Corporation Stock-Based Compensation Plan for Officers and Key Employees.
( 2)	The reporting person disclaims beneficial ownership of these securities.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Ziolkowski Andrew T CARPENTER TECHNOLOGY CORRPORATION PO BOX 14662 READING, PA 19612-4662			Sr. VP Strategic Integration

Signatures
James D. Dee/POA		3/6/2012
^** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.