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10077 Evaluation of Stress Corrosion Cracking Behavior of Steel in Multiple Ethanol Environments

Picture for 10077 Evaluation of Stress Corrosion Cracking Behavior of Steel in Multiple Ethanol Environments
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Product Number: 51300-10077-SG
ISBN: 10077 2010 CP
Author: Anand Venkatesh, Brian Chambers, Russell D. Kane and Ken Kirkham
Publication Date: 2010
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Significant concerns currently exist regarding the stress corrosion cracking (SCC) behavior of steel pipeline and terminal facilities used to handle fuel grade ethanol. Various factors have been associated with ethanol SCC (SCC) of carbon steels and include conditions that promote crack initiation and growth, corrosion potential, dissolved oxygen concentration levels, water content, and the chemical species of the ethanol itself. Recently, a comprehensive laboratory testing program was conducted to investigate and compare the SCC behavior of different fuel grade ethanol feedstock under varying test conditions. The testing methodology included notched slow strain rate (N-SSR) tests for the determination of crack growth rates, and threshold stress intensity for SCC using a fracture-mechanics based approach. The N-SSR tests were further augmented with electrochemical characterizations and pre- and post-test chemical analyses of the ethanol solutions. This paper discusses the testing approach and summarizes the key findings of this program.

Keywords: slow-strain-rate, stress intensity factor, crack growth rate, ethanol, SCC
Significant concerns currently exist regarding the stress corrosion cracking (SCC) behavior of steel pipeline and terminal facilities used to handle fuel grade ethanol. Various factors have been associated with ethanol SCC (SCC) of carbon steels and include conditions that promote crack initiation and growth, corrosion potential, dissolved oxygen concentration levels, water content, and the chemical species of the ethanol itself. Recently, a comprehensive laboratory testing program was conducted to investigate and compare the SCC behavior of different fuel grade ethanol feedstock under varying test conditions. The testing methodology included notched slow strain rate (N-SSR) tests for the determination of crack growth rates, and threshold stress intensity for SCC using a fracture-mechanics based approach. The N-SSR tests were further augmented with electrochemical characterizations and pre- and post-test chemical analyses of the ethanol solutions. This paper discusses the testing approach and summarizes the key findings of this program.

Keywords: slow-strain-rate, stress intensity factor, crack growth rate, ethanol, SCC
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Picture for 10073 Understanding the Stress Corrosion Cracking of X-65 Pipeline Steel in Fuel-Grade Ethanol
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10073 Understanding the Stress Corrosion Cracking of X-65 Pipeline Steel in Fuel-Grade Ethanol

Product Number: 51300-10073-SG
ISBN: 10073 2010 CP
Author: Xiaoyuan Lou, Di Yang, Lindsey R. Goodman and Preet M. Singh
Publication Date: 2010
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Picture for 10075 Effect of Ethanol Chemistry on the SCC Susceptibility of Carbon Steel
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10075 Effect of Ethanol Chemistry on the SCC Susceptibility of Carbon Steel

Product Number: 51300-10075-SG
ISBN: 10075 2010 CP
Author: Feng Gui, Narasi Sridhar, J. A. Beavers, Elizabeth A. Trillo and Preet Singh
Publication Date: 2010
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Picture for Development of Carbon Steel for Pipe Resistant to Stress Corrosion Cracking in Fuel Grade Ethanol
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51316-7173-Development of Carbon Steel for Pipe Resistant to Stress Corrosion Cracking in Fuel Grade Ethanol

Product Number: 51316-7173-SG
ISBN: 7173 2016 CP
Author: Itaru Samusawa
Publication Date: 2016
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It is known that carbon steels in Fuel Grade Ethanol (FGE) has pitting corrosion and active path corrosion-type stress corrosion cracking (SCC) susceptibility.  In the current work, susceptibility of pitting and SCC of two types of X52 grade carbon steel were investigated by immersion testing and Slow Strain Rate Testing (SSRT).
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