Study on service limit of AISI 420 stainless steel for sour environment is conducted. Since SSC is a phenomenon of hydrogen embrittlement, the measurement of hydrogen content in steel is a key factor to the predict SSC occurrence. SSC occurs if hydrogen content entering into steel exceeds a critical hydrogen content for the steel. Comparison of both values of hydrogen contents enables to estimate critical environmental conditions and yield strength. Estimation results by this method coincides well with data in several literatures. Through this appraisal, specially heat-treated low yield strength 13Cr steel was found to be a good candidate for sour service.

Subject
Materials, Hydrogen permeation, Yield stress, Hydrogen content, Diffusion, Hydrogen uptake, Tensile tests, Partial pressures, Acidity, Tensile stress, Steel, Sulfide stress cracking, Yield strength
Keywords:
hydrogen sulfide, sulfide stress cracking, hydrogen embrittlement, hydrogen content, 13Cr steel, yield strength, heat treatment
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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