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Alloy 7040 is a variation of 7050, where Zr additions prevent recrystallization of hot-worked products during solution heat treatment without the quench sensitivity from additions of Cr. This datasheet provides information on composition limits and fabrication characteristics of aluminum alloys 7040 and 7140 and processing effects on mechanical properties of aluminum alloy 7040-T7651 high-strength plate.

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7040 and 7140: High-Strength Plate, Properties and Selection of Aluminum Alloys, Vol 2B, ASM Handbook, Edited By Kevin Anderson, John Weritz, J. Gilbert Kaufman, ASM International, 2019, p 420,

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