<SEC-DOCUMENT>0001157523-18-000414-index.html : 20180226
<SEC-HEADER>0001157523-18-000414.hdr.sgml : 20180226
<ACCEPTANCE-DATETIME>20180226162241
ACCESSION NUMBER:		0001157523-18-000414
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180220
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180226
DATE AS OF CHANGE:		20180226

FILER:

	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

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12001
		FILM NUMBER:		18640819

	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>8-K
<SEQUENCE>1
<FILENAME>a51760723.htm
<DESCRIPTION>ALLEGHENY TECHNOLOGIES INCORPORATED 8-K
<TEXT>
Document 1 - file: a51760723.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>a51760723ex99_1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: a51760723ex99_1.htm

</DOCUMENT>
</SEC-DOCUMENT>