This investigation examines the intergranular corrosion resistance of both welded and unwelded type 304, 304L, 321, 321L, and 347 alloys after various sensitizing and or stabilizing heat treatments. The intergranular corrosion resistance was characterized using ASTM A262 test methods and the double loop electrochemical potentiodynamic reactivation testing (EPR). The results show that stabilization by itself is not sufficient to render austentic stainless steel immune to sensitization. The EPR testing demonstrates that the double loop (ir/ia) parameters for all alloys do correlate well with corrosion rates measured with the ASTM A262 Practice B test.

Subject
Test methods, Materials, Corrosion resistant alloys, Stainless alloys, Corrosion rate, Structures, Base metals, Sensitization, Corrosion resistance, Stainless steel, Titanium alloys, Intergranular corrosion, Samples
Keywords:
Stainless steel, Intergranular Corrosion, S30400, S30403, S32100, S34700
© 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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