POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned director and/or officer
of Allegheny Technologies Incorporated, hereby constitute and appoint Elliot S.
Davis, Amanda J. Skov and Mary Beth Moore, and each of them, the undersigned's
true and lawful attorneys-in-fact and agents, with full power of substitution
and re-substitution in each, for the undersigned in his or her name, place and
stead, in any and all capacities (including the undersigned's capacity as a
Director and/or officer of Allegheny Technologies Incorporated), granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform each and every act and to execute any and all forms, documents
and instruments which said attorneys-in-fact and agents, or either of them, may
deem necessary or advisable or
which may be required under Section 16(a) of the Securities Exchange Act of
1934, as amended ("Section 16(a)"), and any rules, regulations or requirements
of the Securities and Exchange Commission in respect thereof, in connection with
the acquisition, by purchase or otherwise, or disposition, by sale, gift or
otherwise, of beneficial ownership of shares of common
stock of Allegheny Technologies Incorporated (and any derivative security
relating thereto) by the undersigned, as fully to all intents and purposes as
the undersigned might or could do in person, including specifically, but without
limiting the generality of the foregoing, the power and
authority to sign the name of the undersigned to any Statement of Changes in
Beneficial Ownership of Securities on Form 4 ("Form 4") to be filed with the
Securities and Exchange Commission in respect of any such transaction, to any
and all amendments to any such Form 4, and to any instruments or documents filed
as part of or in connection with any such Form 4, and to file such documents
with the Securities and Exchange Commission, any securities exchange and said
corporation; and the undersigned hereby ratifies and confirms all that said
attorneys-in-fact and agents, or either of them, or their or his or her
substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

The undersigned acknowledges that he or she is appointing said attorneys-in-fact
and agents solely for the convenience of the undersigned in complying with the
reporting requirements of Section 16(a) and said attorneys-in-fact and agents
shall not be liable to the undersigned for any action or failure to take action
in their capacity as such.  The undersigned shall at all times
remain fully and solely responsible for compliance with Section 16(a), including
for determining whether and when any Form 4 must be filed thereunder and the
accuracy and completeness of the information set forth in any Form 4 so filed.
The undersigned agrees not to institute any
action or suit at law or in equity against said attorneys-in-fact and agents, or
each of them, for any action or failure to take action pursuant to the power
granted hereunder or for any deficiency in any action so taken.  The undersigned
further agrees to indemnify and hold said attorneys-in-fact and agents and each
of them harmless from any damages, losses, costs or
expenses incurred by them as a result of any action taken or any failure to take
action in their capacity as such or for any deficiency in any taken.

IN WITNESS WHEREOF, I have subscribed these presents on the date set opposite my
name
below.


Date:  February 28, 2019

By:  /s/ Leroy M. Ball Jr.

Witness: /s/ Amanda J. Skov