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ADVANCED STAINLESS ALLOY CHOSEN FOR HUGE INNOVATIVE OFFSHORE OIL PLATFORM

 ADVANCED STAINLESS ALLOY CHOSEN
 FOR HUGE INNOVATIVE OFFSHORE OIL PLATFORM
 PITTSBURGH, July 15 /PRNewswire/ -- Allegheny Ludlum (NYSE: ALS) today announced that its proprietary AL-6XN(R) alloy has been chosen for use on the innovative Heidrun offshore oil and gas platform to be built for Conoco Norway, Inc.
 The contract is valued at approximately $4 million.
 Located in the North Sea in water approximately 1,150 feet deep, the new platform will be the northernmost offshore production facility in the world requiring materials capable of withstanding a brutal environment.
 Developed by Allegheny Ludlum's Technical Center, "AL-6XN(R) alloy was selected by Heidrun after an extended corrosion study by the Norwegian Corrosion Institute (SINTEF)," according to Per-Erik Glaso, president of SIO Stainless, Allegheny Ludlum's exclusive distributor for marketing in Norway.
 The Heidrun platform is an innovative design culminating 10 years of research in Norway, the center of North Sea offshore oil exploration. It will be the world's largest tension-leg production platform and the first one made primarily of concrete. The platform's deck will be larger than a city block and will be as tall as a 35-story building when measured from the base of the hull to the top of the production deck.
 Shipment of AL-6XN(R) alloy sheet, plate and billet will begin in September 1992. The alloy will be used for high pressure seawater pipes and pipe parts in seawater inlets, cooling lines, firewater systems and heat exchangers. Fabricators located in four European countries will process the AL-6XN(R) alloy into welded pipe, fittings, flanges, line blinds and o'lets for the Heidrun project which is scheduled for operation in 1995.
 AL-6XN(R) alloy is a low carbon, high purity, nitrogen-bearing "super-austenitic" stainless alloy. Its corrosion resistance and high strength make it the material of choice in applications where excellent formability and weldability are essential.
 The advanced Allegheny Ludlum alloy is well-suited for application in harsh marine and corrosive environments. It has been used in more than 50 million feet of seawater-cooled power plant condenser tubing and other coastal service water piping systems.
 Allegheny Ludlum is a leading producer of a wide range of specialty materials, including stainless steels, electrical steels and high technology alloys. The company, which reported 1991 revenues of $1 billion is listed on the New York Stock Exchange (symbol: ALS).
 -0- 7/15/92
 /delval/
 /CONTACT: Bert Delano, 412-394-2813, or Dan Greenfield, 412-394-3004, both of Allegheny Ludlum/
 (ALS) CO: Allegheny Ludlum ST: Pennsylvania IN: MNG SU:


CD-DG -- PG013 -- 9739 07/15/92 17:00 EDT
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Publication:PR Newswire
Date:Jul 15, 1992
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