<SEC-DOCUMENT>0001193125-20-085545-index.html : 20200326
<SEC-HEADER>0001193125-20-085545.hdr.sgml : 20200326
<ACCEPTANCE-DATETIME>20200325190437
ACCESSION NUMBER:		0001193125-20-085545
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		9
FILED AS OF DATE:		20200326
DATE AS OF CHANGE:		20200325
EFFECTIVENESS DATE:		20200326

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12001
		FILM NUMBER:		20743539

	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>DEFA14A
<SEQUENCE>1
<FILENAME>d844070ddefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: d844070ddefa14a.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>2 <FILENAME>g844070j844070broker1.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 2 - file: g844070j844070broker1.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>g844070j844070broker2.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: g844070j844070broker2.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>g844070j844070common1.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: g844070j844070common1.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g844070j844070common2.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g844070j844070common2.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g844070j844070notice1.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g844070j844070notice1.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g844070j844070notice2.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g844070j844070notice2.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g844070j844070plan1.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g844070j844070plan1.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g844070j844070plan2.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g844070j844070plan2.jpg
</DOCUMENT> </SEC-DOCUMENT>