Ballistic Evaluation of 7085 Aluminum

Report No. ARL-TR-5952
Authors: Denver Gallardy
Date/Pages: March 2012; 66 pages
Abstract: The U.S. Army Research Laboratory (ARL) evaluated the ballistic performance of two tempers of aluminum alloy (AA) 7085 produced by Alcoa. The tempers included a high-strength variant, 7085-T7E01, for utilization as an appliqué against direct-fire threats and a lower strength, higher ductility variant, 7085-T7E02, for underbody blast protection kits. Ballistic evaluation was performed using armor-piercing and fragment-simulating projectiles to determine the V50 ballistic protection limit (V50) for various thicknesses of each temper. The V50 was then compared to other ballistic-grade aluminum alloys, namely AA7039 and AA2139. The results of these tests were used to derive the acceptance tables included in the new military specification, MIL-DTL-32375(MR), created for AA7085.
Distribution: Approved for public release
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Last Update / Reviewed: March 1, 2012