Taiwan power project

ATI Allegheny Ludlum, an Allegheny Technologies Incorporated company, has been selected to supply specialty metals for the reactor building service-water piping system at the Taiwan Power Company (Taipower) Number 4 power plant in Lungmen, Taiwan. Allegheny Ludlum is to supply its AL-6XN Optimized™ alloy, a superaustenitic alloy designed for saltwater environments. Pat Hassey, Chairman, President and Chief Executive Officer of Allegheny Technologies, said: “The engineer Stone and Webster wanted a material with superior stress corrosion cracking resistance. AL-6XN Optimized™ alloy is a special version of our proprietary AL-6XN® alloy designed to meet these requirements. Our technical employees worked closely with Taipower’s fabricator, Doosan Heavy Industries and Construction Co. Ltd of Korea, to help meet their needs.â€? The AL-6XN Optimized™ alloy exhibits far greater resistance to chloride pitting, crevice corrosion, and stress-corrosion cracking than exhibited by the standard 300 series stainless steels and is less costly than the traditional nickel-based corrosion resistant alloys. The AL-6XN® alloy family has been used in seawater handling systems used in power generation, desalination, shipping, and oil and gas applications. The typical iron-based composition of AL-6XN® alloy includes 20% chromium, 24% nickel and 6% molybdenum.

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