LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS


	KNOW ALL MEN BY THESE PRESENTS, that I, the undersigned director and/or officer
of ATI Inc., 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:  October 4, 2022

By:  /s/ Tina Killough Busch

Witness: /s/ Amanda J. Skov