Sulfide stress cracking case histories of 12Cr and 17-4PH stainless steel tubing hangers are presented along with the results of NACE TM-01-77 laboratory tests performed on the failed material. Even though the hangers both met NACE MR0175-88 hardness requirements, failure still occurred. These failures demonstrate the limitations of these alloys in high H2S service even when MR0175 requirements are met. The need for better usage guidelines is discussed.

Subject
Materials failure, Corrosion failures, Materials, Secondary cracks, Yield stress, Fracture surfaces, Tubing, Corrosion resistance, Stainless steel, Sulfide stress cracking, Hardness, Alloys, Stress corrosion cracking
© 1990 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).
1990
Association for Materials Protection and Performance (AMPP)
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