Steels containing up to 5% Cr were investigated with respect to their corrosion performance in oil and gas environments. Steels containing 3%Cr or more showed improved corrosion performance over Cr free steel by a factor of two or more in a sweet corrosion environment. 5% Cr steel, however, showed deeper localized corrosion than 3% Cr steel under simulated seawater injection conditions with some oxygen contamination. Although Cr containing steels showed rather poor SSC resistance, the resistance was improved by Mo addition.

Subject
Marine environments, Corrosion rate, Sour environments, Corrosion testing, Seawater injection, Average corrosion rates, Steel, Oxygen, Carbon steel, Carbon, Corrosion resistance, Localized corrosion, Sulfide stress cracking
Keywords:
CO2 corrosion, oil country tubular goods (OCTG). Cr bearing steel, sulfide stress cracking, sea water injection
© 2001 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).
2001
Association for Materials Protection and Performance (AMPP)
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