The application of 13% Cr grade stainless steels is increasing mainly due to the introduction of higher alloyed and weldable grades with carbon content as low as 0.01 %, and the very favourable costs compared to alternative materials as the 22Cr duplex stainless steel. Therefore these steels now have been subject to a major evaluation for transport of oil and gas offshore in the North Sea. This paper discusses aspects of testing required to assess their corrosion properties and their susceptibility to environment assisted cracking (EAC), caused by both H2S internally and cathodic protection externally. Testing is discussed with emphasise on test parameters for welded 13% Cr steel using different types of consumables.

Subject
Environmental cracking, Ambient conditions, Test methods, Water, Materials, Cathodic protection, Welding, Acidity, Steel, Sulfide stress cracking, Heat treatment, Stress corrosion cracking, Ductility
Keywords:
13%Cr SS, Welds, EAC, Test methods, Test parameters, H2S, Cathodic protection
© 1997 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).
1997
Association for Materials Protection and Performance (AMPP)
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