Industrial Experience on the Caustic Cracking of Stainless Steels and Nickel Alloys - A Review

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Caustic environments are present in several industries, from nuclear power generation to the fabrication of alkalis and alumina. The most common material of construction is carbon steel but its application is limited to a maximum temperature of approximately 80 C. The use of Nickel (Ni) alloys is recommended at higher temperatures. Commercially pure Ni is the most resistant material for caustic applications both from the general corrosion and the stress corrosion cracking (SCC) perspectives. Nickel rich alloys also offer a good performance. The most important alloying elements are Ni and chromium (Cr). Molybdenum (Mo) is not a beneficial alloying element ... continued below

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PDF-file: 17 pages; size: 0.3 Mbytes

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Rebak, R B October 9, 2005.

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Caustic environments are present in several industries, from nuclear power generation to the fabrication of alkalis and alumina. The most common material of construction is carbon steel but its application is limited to a maximum temperature of approximately 80 C. The use of Nickel (Ni) alloys is recommended at higher temperatures. Commercially pure Ni is the most resistant material for caustic applications both from the general corrosion and the stress corrosion cracking (SCC) perspectives. Nickel rich alloys also offer a good performance. The most important alloying elements are Ni and chromium (Cr). Molybdenum (Mo) is not a beneficial alloying element and it dissolves preferentially from the alloy in presence of caustic environments. Austenitic stainless steels such as type 304 and 316 seem less resistant to caustic conditions than even plain carbon steel. Experimental evidence shows that the most likely mechanism for SCC is anodic dissolution.

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PDF-file: 17 pages; size: 0.3 Mbytes

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  • Presented at: Corrosion/2006 Conference and Exposition, San Diego, CA, United States, Mar 12 - Mar 16, 2006

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  • Report No.: UCRL-PROC-216072
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 881876
  • Archival Resource Key: ark:/67531/metadc885811

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  • October 9, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Nov. 29, 2016, 2:56 p.m.

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Rebak, R B. Industrial Experience on the Caustic Cracking of Stainless Steels and Nickel Alloys - A Review, article, October 9, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc885811/: accessed December 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.