ATI 2003® Lean Duplex Alloy Selected for North Sea Project

  ATI 2003® Lean Duplex Alloy Selected for North Sea Project

             First use for offshore topside structural components

Business Wire

PITTSBURGH -- January 14, 2013

Allegheny Technologies Incorporated (NYSE: ATI) announced today that ATI 2003®
lean duplex stainless has been selected as the material of choice for a full
array of offshore topside structural components. ATI 2003 lean duplex
stainless was chosen over 316L stainless and coated carbon steel for topside
secondary and outfitting structural components on a major offshore project in
the Norwegian North Sea. The end user chose ATI’s innovative material to solve
both corrosion and weight concerns.

"This selection is another first application and a significant achievement in
the market acceptance of the innovative ATI 2003 lean duplex stainless. ATI
2003 alloy creates value for our customers by providing opportunities for
significant cost savings and strength-to-weight advantages compared to
materials currently employed,” said Rich Harshman, Chairman, President, and
Chief Executive Officer of ATI. “For years, 316L austenitic stainless and
coated carbon steel have been used for these offshore applications. Recent
reports have highlighted undesirable chloride pitting and corrosion cracking
with 316L and significant maintenance costs with coated carbon steel in these
marine environments.”

Examples of the topside secondary and outfitting structural applications
include perforated, roll formed, and fabricated components such as roof and
wall panels, structural pipe, pipe supports and clamps, fire doors, blast
walls, and fire protection walls.

ATI 2003® (UNS S32003) lean duplex stainless steel (LDSS) is a
molybdenum-enhanced, proprietary duplex stainless alloy. ATI 2003 LDSS (20%
Cr, 3% Ni, 2% Mo) provides enhanced strength and corrosion resistance and can
be an economic alternative to Type 316L (17% Cr, 10% Ni, 2% Mo) stainless.
With a Pitting Resistance Equivalency number (PREn) of 30, ATI 2003 lean
duplex is a more corrosion resistant, higher strength, and cost effective
material for consideration on new platforms having a 40-year design life in
the harsh North Sea environment. The calculated PREn value is a popular means
of ranking stainless steels for their anticipated resistance to corrosion
pitting in aqueous environments. Since 2006, ATI 2003 LDSS has been approved
to NORSOK Standard M-650. The NORSOK standards are developed by the Norwegian
petroleum industry with broad petroleum industry participation, to ensure
adequate safety, value adding and cost effectiveness for petroleum industry
developments and operations. For more information on ATI 2003 LDSS, visit
www.atimetals.com.

Duplex alloys are a relatively new family of stainless alloys that are gaining
attention from end users for their attributes of strength and corrosion
resistance over a wide product range. ATI 2003 lean duplex stainless is
particularly attractive due to lower raw material content and phase stability
which ease fabrication with welding, forming, heat treating, and machining.
ATI is a global industry leader offering the market a range of duplex, lean
duplex, and super duplex stainless alloys to provide the optimum solutions for
strength and corrosion resistance.

Building the World’s Best Specialty Metals Company®

Allegheny Technologies Incorporated is one of the largest and most diversified
specialty metals producers in the world with revenues of approximately $5.2
billion for the last twelve months. ATI has approximately 11,300 full-time
employees world-wide who use innovative technologies to offer global markets a
wide range of specialty metals solutions. Our major markets are aerospace and
defense, oil and gas/chemical process industry, electrical energy, medical,
automotive, food equipment and appliance, machine and cutting tools, and
construction and mining. Our products include titanium and titanium alloys,
nickel-based alloys and superalloys, grain-oriented electrical steel,
stainless and specialty steels, zirconium, hafnium, niobium, tungsten
materials, forgings, castings, and fabrication and machining capabilities. The
ATI website is www.ATImetals.com.

Contact:

Allegheny Technologies Incorporated
Dan L. Greenfield, 412-394-3004
www.ATImetals.com