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51314-4419-Influence of Metallurgical Processing Welding and Surface Treatments on Ethanol SCC of Caron Steel

Picture for Influence of Metallurgical Processing Welding and Surface Treatments on Ethanol SCC of Caron Steel
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Product Number: 51314-4419-SG
ISBN: 4419 2014 CP
Author: Russell Kane
Publication Date: 2014
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$20.00
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The results of a recently completed research study involving PRCI and USDOT on the influences of metallurgical processing welding and surface treatments on ethanol SCC of modern pipeline steels are presented. This work was an aimed to developed better understanding of metallurgical and mechanical variables (composition processing surface treatments and residual stresses) that might influence susceptibility to ethanol SCC. In addition this work included assessment of appropriate guidelines for construction of newand existing pipelines designed for resistance to ethanol SCC and methods to detect and mitigate damage that may result from this phenomenon. Of particular interest was the use of plastic strain and cyclic stresses to simulate service conditions that appear to have resulted in field service failures in certain segments of pipeline handling fuel grade ethanol. The results of laboratory testing is presented versus the parameters examined and recommendations are made for improved industry guidelines for ethanol SCC and test methods for its evaluation.
The results of a recently completed research study involving PRCI and USDOT on the influences of metallurgical processing welding and surface treatments on ethanol SCC of modern pipeline steels are presented. This work was an aimed to developed better understanding of metallurgical and mechanical variables (composition processing surface treatments and residual stresses) that might influence susceptibility to ethanol SCC. In addition this work included assessment of appropriate guidelines for construction of newand existing pipelines designed for resistance to ethanol SCC and methods to detect and mitigate damage that may result from this phenomenon. Of particular interest was the use of plastic strain and cyclic stresses to simulate service conditions that appear to have resulted in field service failures in certain segments of pipeline handling fuel grade ethanol. The results of laboratory testing is presented versus the parameters examined and recommendations are made for improved industry guidelines for ethanol SCC and test methods for its evaluation.
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Stress corrosion cracking (SCC) of carbon steel in fuel ethanol service has been observed in an increasing number of failures in the last few years. In the presence of oxygen, all of the samples evaluated in this study produced varying degrees of SCC, except for one of the producer ethanol samples. The reason for the high corrosion potential in this sample is still unknown and more detailed analysis of the sample chemical make-up is needed.

 
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