Alloy from Allegheny Technologies used on world’s largest stainless roof

November 9, 2007—Allegheny Technologies Incorporated has announced that one of its proprietary alloys is being used for the largest stainless roof in the world, at the new Doha International Airport in Qatar.

ATI Allegheny Ludlum, an ATI company, supplied 3.5 million pounds of its proprietary AL 2003 lean duplex stainless sheet to Contrarian Metal Resources for this project. AL 2003 lean duplex alloy is an economic alternative stainless that offers better corrosion resistance and strength compared to the more common and higher nickel-bearing Type 316L, according to Allegheny.

The airport specified that Contrarian apply its proprietary architectural matte finish, InvariMatte, on the AL 2003 lean duplex stainless alloy for added aesthetic value and for glare resistance. At almost two million square feet (approximately the size of 40 American football fields), the airport’s roof will be the largest stainless roof in the world when completed, the company says.

AL 2003 alloy provides cost savings and can provide enhanced performance over the conventional grade 316L, according to Allegheny. The AL 2003 alloy strength advantage, in some applications, allows up to one-third reduction in thickness over a comparable design using Type 316L, says the company.

ATI Allegheny Ludlum is a world leader in the technology, production, and marketing of sheet, plate, and strip specialty metals including stainless alloys, nickel-based alloys, titanium, and titanium- based alloys. For more information, see the company’s Web site.

Topics

Share this article

LinkedIn
Instagram Threads
FM Link logo