Alloy 603 GT is a newly developed cobalt-free Ni-base alloy. The composition of the alloy guarantees excellent high temperature strength due to the high carbon content of 0.2 - 0.4 wt.-% provide high thermal stability so that resolutioning during service cannot occur, thus preventing grain provide high thermal stability so that resolutioning during service cannot occur, thus preventing grain growth and maintaining the long term mechanical properties.

Superior high temperature corrosion resistance up to 1200°C (2192°F) is provided by the formation of alumina scale due to the high aluminum content of 2.4-3.0 wt.-% in the alloy. Additions of yttrium up to 0.1 wt.-% improve the spallation resistance under thermal cycling by the formation of very thin and tight oxide layers.

Working, machining and processing can easily be done using conventional techniques. Welding with the matching filler metal provides mechanical strength and oxidation resistance similar to the parent metal.

Subject
New alloys, Oxidation resistance, Corrosion resistant alloys, Nickel based alloys, Oxide formation, Commercial alloys, Bending, Tensile strength, Corrosion resistance, Aluminum alloys, Alloys, Creep strength, High temperature
Keywords:
Alloy 603 GT, welding, mechanical properties, oxidation resistance
© 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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