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Development of Recycling-Friendly Aluminum Alloys for Extruded Products

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Development of Recycling-Friendly Aluminum Alloys for Extruded Products

Subodh K. Das 1, John A.S. Green 2, and J. Gilbert Kaufman 1
1 Secat, Inc., Lexington, Kentucky, USA
2 JASG Consulting, Ellicott City, Maryland, USA

Track: MANAGEMENT ISSUES - Globalization

ABSTRACT --- Recycling aluminum alloys provides major economic and
environmental benefits. As a result, it is appropriate for the aluminum industry and the
United States as a whole to identify, develop, and implement technologies that will
maximize the benefits of recycling. This article focuses primarily on alloy design for
optimizing the reuse of recycled metal specific for the extrusion industry, which relies on
billet manufacturers to supply their specified starting material. Several alloy design
approaches based on likely streams of recycled material available to the billet casting
industry are put forth, and some specific compositions for evaluation are proposed. This
approach involves the evaluation of potential new alloys from recycled scrap to assure
they will have the properties that extrusion end users desire. This is both the most
forward-looking approach as we move toward a more recycling friendly world and the
most overlooked process for its potential in maximizing the recycle loop. Options for
moving forward to further capitalize on the advantages of aluminum recycling are also

© Extrusion Technology for Aluminum Profiles Foundation (ET Foundation). All rights reserved. No part of The Proceedings may be reproduced in any form without the express written permission of the ET Foundation.