During the startup period following a turnaround a leak was detected in the steam superheater coil of a steam/methane reformer furnace. The steam superheater coil was constructed of 2-1/4 Cr-1 Mo steel and austenitic stainless steel. The failure occurred in the stainless steel portion of the coil, and resulted in a complete parting of one stainless steel tube and numerous other cracks that penetrated the entire wall of the tubes. The 2-1/4 Cr-1 Mo steel portion of the steam superheater coil was not cracked.

Subject
Coils, Intergranular stress corrosion cracking, Tubes, Transgranular stress corrosion cracking, Potassium, Intergranular cracking, Mechanical failure, Steel, Carbonate stress corrosion cracking, Stainless steel, Caustic stress corrosion cracking, Steam, Chloride stress corrosion cracking
© 1978 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).
1978
Association for Materials Protection and Performance (AMPP)
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