Concern for stress corrosion cracking (SCC) has limited the introduction of fuel-grade ethanol (FGE) into US pipelines. Past laboratory testing has shown that several common impurities are known to enhance SCC potency. FGE specifications from two different countries are compared. Notched slow strain rate test results from the current work and previous studies representing different impurity levels allowed by the various specifications will be compared. Although the focus is on specification differences, test results will include FGE manufactured from different organic material, principally corn and sugar cane. The case for considering electrical conductivity as a possible indicator of SCC potency will be made.

Subject
Acids, Materials, Stress intensity, Pipelines, Life cycle costing, Milling, Impurities, Reagents, Ethanol, Chlorides, Stress corrosion cracking, Conductivity, Samples
Keywords:
SCC, Ethanol, Specification
© 2011 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2011
Association for Materials Protection and Performance (AMPP)
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