Many alloys exposed in high-temperature process equipment corrode by sulfidation corrosion in the presence of steam or other oxidizing gases. This paper discusses the latest results of an extensive testing program for a diverse group of about 50 commercial alloys exposed to temperatures of 573 – 1273 K with exposure times up to 6,000 hours for a total data compilation of nearly 4 million hr. The data compilation now allows engineering corrosion assessments for sulfidation and sulfidation in the presence of oxidizing gases and predictions for wide ranges of conditions. The effects of gas composition, temperature, exposure time and alloy type have all been analyzed and compiled to allow prediction of corrosion for wide ranges of conditions to allow engineering predictions of corrosion-limited lifetimes. Applications for this technology are found in industries such as oil refining, petrochemicals production, pulp/paper production, and power generation.

Subject
Hydrogen concentration, Corrosion rate, Nickel based alloys, Metal loss, Liquids, Corrosion products, Penetration, Metals, Gas composition, Sulfidation, Sulfides, Gases, Alloys
Keywords:
ASSET, sulfidation, high-temperature corrosion predictions, corrosion data compilation, engineering lifetime predictions, weight change, parabolic rate constant
© 2004 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).
2004
Association for Materials Protection and Performance (AMPP)
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