Exhibit 99.1

               Allegheny Technologies Announces Expansion of its
              Nickel-based Alloy and Specialty Alloy Capabilities


    PITTSBURGH--(BUSINESS WIRE)--Sept. 8, 2005--Allegheny Technologies
Incorporated (NYSE:ATI) announced today an expansion of its
premium-melt nickel-based alloy, superalloy, and specialty alloy
production capabilities. These investments are aimed at increasing
ATI's capacity to produce these high performance alloys used for
aero-engine rotating parts; airframe applications; oil and gas
exploration, extraction, and refining; and power generation land-based
turbines and flue gas desulfurization pollution control units. These
incremental capital investments of approximately $30 million over the
next 15 months will be funded from internal cash flow.
    Major projects of this expansion, which is expected to increase
ATI's premium-melt capacity by approximately 20%, include:

    --  Upgrading and expanding vacuum induction melt (VIM) capacity.
        VIM is a melting process designed for premium grades with high
        alloy content that require more precise chemistry control and
        lower impurity levels.

    --  Installation of two new electro-slag re-melt (ESR) furnaces
        and three new vacuum arc re-melt (VAR) furnaces. ESR and VAR
        furnaces are consumable electrode re-melting processes used to
        improve both the cleanliness and metallurgical structure of
        alloys.

    "We expect growth of approximately $70 million of annual revenue
with attractive after-tax returns from these capital projects when
they are implemented," said Pat Hassey, Chairman, President and Chief
Executive Officer of Allegheny Technologies. "These incremental
capital investments add premium-melt capacity to help maximize the
potential of our installed asset base and optimize market
opportunities for ATI. As a result of investments made during the past
several years, ATI has unparalleled finishing operations for a broad
range of high performance alloys in straight-length and flat-rolled
products.
    "These strategic investments to expand our nickel-based alloy,
superalloy, and specialty alloy product capabilities are another
milestone in profitably growing our high performance metals business.
This expansion follows our recently announced $100 million investment
to grow ATI's titanium product capabilities."
    Market demand for premium-melt nickel-based alloy, superalloy, and
specialty alloy products is currently strong and is expected to
continue to grow:

    --  Demand for ATI's premium-melt alloys from the aerospace
        market, for both aero-engine and airframe applications, is
        expected to continue to be robust for the next several years.
        The new generation of fuel efficient aircraft increases the
        need for ATI's nickel-based superalloys and high-strength
        specialty stainless alloys.

    --  Demand for ATI's premium-melt alloys is strong from the oil
        and gas market for sub-sea piping, banding straps for flow
        lines, umbilical, instrumentation, and injection tubing.
        Deeper wells and more corrosive conditions increase demand for
        premium-melt nickel-based and specialty alloys.

    --  Demand for ATI's premium-melt alloys is expected to be strong
        from the power generation market for industrial gas turbines
        (IGT) and flue gas desulfurization (FGD) pollution control
        equipment. Demand for FGD units at coal power generation
        plants is expected to grow in the United States as a result of
        legislation. In addition, strong demand is expected to
        continue from Asia for both new power plants and upgrades of
        pollution control equipment.

    Allegheny Technologies is a leading producer of nickel-based
alloys, superalloys, and specialty alloys. ATI manufactures
straight-length products (long products), including ingot, billet,
bar, and rod; and flat-rolled products, including plate, sheet, and
strip. ATI is a technology leader in manufacturing, research and
development for these products.
    ATI's premium-melt products typically exhibit any of the
properties of high temperature resistance, high strength, and high
temperature oxidation resistance. Some examples of ATI's premium-melt
alloys include Nickelvac(R) 625, Altemp(R) 625, AL 625 HP(TM),
Nickelvac(R) 825, AL 825(TM), Altemp(R) 718, Allvac(R) 718, Allvac(R)
718 Plus(TM), Altemp(R) HX, Altemp(R) A286, Vasco(R)15-5, AL 15-5(TM),
Vasco(R) 403, AL 276, AL 22, AL 255, AM 350(TM), and AM 355(TM)
alloys. For more information on ATI's broad range of specialty alloys,
visit www.alleghenytechnologies.com.
    This news release contains forward-looking statements. These
statements are based on management's current expectations and are
subject to uncertainty and changes in circumstances. Actual results
may differ materially from those projected in the forward-looking
statements. Additional information concerning factors that could cause
actual results to differ materially from those projected in the
forward-looking statements is contained in Allegheny Technologies'
filings with the Securities and Exchange Commission.
    Allegheny Technologies Incorporated is one of the largest and most
diversified specialty materials producers in the world with revenues
of approximately $2.7 billion in 2004. ATI has approximately 9,000
full-time employees world-wide who use innovative technologies to
offer growing global markets a wide range of specialty materials
solutions. Our principle markets are aerospace, construction and
mining, chemical processing/oil & gas, food equipment and appliance,
automotive, electrical energy, machine and cutting tools, and medical.
Our products include nickel-based alloys and superalloys, titanium and
titanium alloys, stainless and specialty steels, zirconium, hafnium,
and niobium, tungsten materials, silicon and tool steels, and forgings
and castings. The Allegheny Technologies website is
www.alleghenytechnologies.com.



    CONTACT: Allegheny Technologies Incorporated
             Dan L. Greenfield, 412-394-3004