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A new high-temperature alloy

By Gerald Ondrey |

Last month, Carpenter Technology Corp. (Wyomissing, Pa.; www.cartech.com) licensed an alumina-forming austenitic stainless-steel alloy developed at the U.S. Dept. of Energys Oak Ridge National Laboratory (ORNL; Tenn.; www.ornl.gov). The new alloy is said to be unique in that the composition allows for alumina scales to form on the exterior of steel, which provides significant oxidation resistance. The alloy displays excellent creep strength at high (700–800°C) temperatures, and can be produced at a lower price than existing alloys that require high amounts of nickel, says ORNL. Potential applications include recuperators and heat exchangers, down-hole drilling and chemical processing equipment and materials — applications in which high-temperature or corrosive environments are encountered, says ORNL.   Click here for a full pdf version of the Chementator Section
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