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09530 SCC Behavior of Steel in Fuel Ethanol and Butanol

Picture for 09530 SCC Behavior of Steel in Fuel Ethanol and Butanol
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Product Number: 51300-09530-SG
ISBN: 09530 2009 CP
Author: Dale McIntyre, Anand Venkatesh, Russell D. Kane
Publication Date: 2009
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This paper summarizes the results of a laboratory testing program to evaluate stress corrosion cracking (SCC) susceptibility of carbon steel in fuel grade ethanol (FGE) per ASTM D4806, synthetic ethanol blends simulating FGE, and butanol. Biologically obtained butanol has been proposed as an alternative to ethanol. This study compares the two for their potential to induce environmental cracking. The tests results include both fracture mechanics and slow strain rate tests for the determination of crack growth rates, threshold stress intensity for SCC and conventional SSR ratios as an indication of SCC. In these test conditions, butanol was less prone to promote SCC of steel than fuel-grade ethanol.

KEYWORDS: Fuel grade ethanol, stress corrosion cracking, ethanol SCC, carbon steel, slow strain rate, fracture toughness, crack growth rate.
This paper summarizes the results of a laboratory testing program to evaluate stress corrosion cracking (SCC) susceptibility of carbon steel in fuel grade ethanol (FGE) per ASTM D4806, synthetic ethanol blends simulating FGE, and butanol. Biologically obtained butanol has been proposed as an alternative to ethanol. This study compares the two for their potential to induce environmental cracking. The tests results include both fracture mechanics and slow strain rate tests for the determination of crack growth rates, threshold stress intensity for SCC and conventional SSR ratios as an indication of SCC. In these test conditions, butanol was less prone to promote SCC of steel than fuel-grade ethanol.

KEYWORDS: Fuel grade ethanol, stress corrosion cracking, ethanol SCC, carbon steel, slow strain rate, fracture toughness, crack growth rate.
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Picture for 09528 Corrosion and SCC Issues in Fuel Ethanol and Biofuels
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09528 Corrosion and SCC Issues in Fuel Ethanol and Biofuels

Product Number: 51300-09528-SG
ISBN: 09528 2009 CP
Author: Sankara Papavinasam, Russell D. Kane
Publication Date: 2009
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Picture for 08153 Prevention of Internal SCC in Ethanol Pipelines
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08153 Prevention of Internal SCC in Ethanol Pipelines

Product Number: 51300-08153-SG
ISBN: 08153 2008 CP
Author: J. Beavers, M. Brongers, A. Agrawal, and F. Tallarida
Publication Date: 2008
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Picture for 07574 SCC of Carbon Steel in Fuel Ethanol Service: Effect of Corrosion Potential and Ethanol Process
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07574 SCC of Carbon Steel in Fuel Ethanol Service: Effect of Corrosion Potential and Ethanol Processing Source

Product Number: 51300-07574-SG
ISBN: 07574 2007 CP
Author: Julio G. Maldonado and Narasi Sridhar
Publication Date: 07574
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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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