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Development and Application of New Alloy AA2013

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Development and Application of New Alloy AA2013

Katsuya Kato, Tadashi Minoda, and Hideo Sano,
Light R& D Center, Sumitomo Metal Industries, Ltd., Nagoya, Japan


Track: EXTRUSION/DIE PRACTICAL - Hard Alloys

ABSTRACT—The AA2024 alloy has higher strength and superior fatigue properties,
and therefore, this alloy has various uses. However, it has a lower extrudability, and the
port-hole extrusion process cannot be applied to this alloy. On the other hand, 6xxx
aluminum alloys have a higher extrudability, and can be extruded into hollow shapes
using a port-hole die. However, the strength of the 6xxx alloys is lower than that of the
AA2024 alloy. As a solution to this problem, we developed the new alloy AA2013 for
extrusion. The specified strength of AA2013-T6511 is higher than that of
AA2024-T3511. The fatigue strength of AA2013-T6511 is almost the same as that of
AA2024-T3511, while the fatigue crack propagation rate is lower than that of
AA2024-T3511. The AA2013 alloy has an extrudability that is superior to that of the
AA2024 alloy, and it can be produced in complex shapes using the port-hole die.
Hollow-shape extrusions using the AA2013 alloy can make integrated constructions
possible; therefore, assembly costs can be reduced. The properties of the AA2013 alloy
were registered with the Metallic Materials Properties Development & Standardization
(MMPDS), in order to use this alloy for aerospace applications. The application of the
AA2013 alloy is currently increasing, not only for aerospace applications, but also for
general uses.

© 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.

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