The use of duplex and super duplex stainless steels has increased over the last fifteen years. Since the improvement of their weldability, the use of duplex grades has grown dramatically in many fields such as pulp and paper industry, PVC fabrication, phosphoric acid production, chemical transportation, mining, hydrometallurgy, nitric acid and pollution control equipments .

This paper presents corrosion studies completed with the results of field tests, field experiences with system components and industrial references. In many cases these tests include welded joint samples or welded components realized with several welding methods.

Subject
Digesters, Molybdenum, Corrosion rate, Welding, Acidity, Mechanical properties, Nitrogen, Corrosion resistance, Duplex stainless steel, Stainless steel, Chlorides, Heat treatment, Chloride stress corrosion cracking
Keywords:
duplex stainless steels, super duplex, corrosion, pulp and paper, phosphoric acid, pollution control, FGD, PVC
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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