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07101 Modified Alloy 28 (UNS N08028) with Increased Resistance to Localized Corrosion in Sour Environments

Picture for 07101 Modified Alloy 28 (UNS N08028) with Increased Resistance to Localized Corrosion in Sour Enviro
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Product Number: 51300-07101-SG
ISBN: 07101 2007 CP
Author: Anna Juhlin, Daniel Leander, Eduardo Gomes, Per Olsson Artberger, and Ulf H. Kivisakk
Publication Date: 2007
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The commonly used Corrosion Resistant Alloy UNS N08028 has been further developed in order to enhance corrosion resistance in sour environments with high salinity. Testing in oxidizing laboratory environment has shown that by increasing the PRE value from 39 to 42, the critical pitting temperature in chloride bearing solutions is increased. Furthermore, the modifications made to the alloy also increase the resistance to sulphide induced stress corrosion cracking and thereby enlargening the application window for the material. The modified UNS N08028 has been installed and is successfully under operation in very harsh environments within the Caspian Sea region. The upgraded properties of modified UNS N08028 make it a candidate for sour environments with high salinity. This study summarizes testing on mechanical, micro structural and corrosion properties.
The commonly used Corrosion Resistant Alloy UNS N08028 has been further developed in order to enhance corrosion resistance in sour environments with high salinity. Testing in oxidizing laboratory environment has shown that by increasing the PRE value from 39 to 42, the critical pitting temperature in chloride bearing solutions is increased. Furthermore, the modifications made to the alloy also increase the resistance to sulphide induced stress corrosion cracking and thereby enlargening the application window for the material. The modified UNS N08028 has been installed and is successfully under operation in very harsh environments within the Caspian Sea region. The upgraded properties of modified UNS N08028 make it a candidate for sour environments with high salinity. This study summarizes testing on mechanical, micro structural and corrosion properties.
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