High-nickel, corrosion-resistant alloys (CRA) of alloy C-type (e.g. UNS N10276) and alloy G type (e.g, UNS N06985) have been extensively tested and used in deep sour gas environments.

An improved 50Ni-20Cr-9Mo-Bdl.Fe alloy (UNS N06950) is presented and its mechanical properties and corrosion resistance are described. This alloy fills the need for making production of moderately sour wells economically viable.

Subject
Hydrogen embrittlement, Materials, Corrosion resistant alloys, Nickel based alloys, Molybdenum alloys, Sour environments, Cracking resistance, Sodium chloride solution, Corrosion resistance, Alloys, Stress corrosion cracking, Slow strain rate technique, Chloride stress corrosion cracking
Keywords:
G-50 alloy, oil and gas, sour brine, stress corrosion cracking, hydrogen embrittlement, slow strain rate testing
© 1991 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).
1991
Association for Materials Protection and Performance (AMPP)
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