High Temperature

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The Chemical (High Temperature) Technical Community of Interest is a group of people (both AMPP members and nonmembers) who have come together for the purpose of furthering a common cause by sharing wisdom, knowledge, information, and/or data for the performance of both metallic and nonmetallic materials in specific environments where sustained temperatures of 538 °C (1,000 °F) are encountered. Document experience with equipment and materials, disseminate information on life assessment techniques for solving industry problems.
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Metal Dusting Damage and Alloys with Improved Resistance

  • 1.  Metal Dusting Damage and Alloys with Improved Resistance

    Posted 10-10-2022 05:34 PM

    As many TCI members appreciate, Metal Dusting is a potential damage mechanism to iron- and nickel base alloys in carbon-supersaturated gaseous atmospheres (carbon activity ac > 1) with metal temperatures between 480C and 900C (900F to 1650F).  

    Given that some new alloys have been introduced in the past 5 years, generally with higher levels of chromium and/or copper, or aluminum (such as Haynes International alloy NO6235 or Special Metals alloy 693), I'm curious to know: 1) if owner/users and failure analysis/met labs continue to see metal dusting damage in process, such as steam reforming, methanol production, and syngas containing CO, CO2, H2, and H2O, and 2) has your site/company deployed newer higher chromium/copper or alumina-forming alloys in services prone to Metal Dusting. 



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    William L. (Bill) Valerioti
    Chair, Process Industries Technical Committee TC 07
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