adding to 3DDave's comment...
Contact ALCOA or ALCAN... they both have capacity to make forged-curved-billets [7050-T7452], or possibly stretched-curved [-T7451] plates, like Your illustration in known/tested heat treat/strain states. May also wish to consider following thick section alloys/tempers Ref MMPDS-08
7050-T7451 AMS 4050, radiused-bowed plate, stretched ~3% during forming, up-to 8.0" thick [ALCOA, ALCAN]
7050-T7452 AMS 4108, 'hand-forged', up-to 8.0" thick [ALCOA, ALCAN]
7085-7452 AMS 4414, 'hand-forged', up-to 12.0" thick [ALCOA]
7040-T7451, AMS 4211, radiused-bowed plate, stretched ~3% during forming, up-to 8.0" thick [ALCAN]
7140-T7451, AMS 4401, radiused-bowed plate, stretched ~3% during forming, up-to 8.0" thick [ALCAN]
7140-T7651, AMS 4408, radiused-bowed plate, stretched ~3% during forming, up-to 8.0" thick [ALCAN]
ALCOA, ALCAN - aerospace aluminum, plate and forged billet, alloys noted.
I have various for all above, but will not list them, this forum.
NOTE.
Boeing purchases these alloys.. especially 7040 and 7041... in significant quantity and at deeper sections than allowed per AMS Specs [per BMS material specs].
NOTE for those who may be inerested: 7136 alloy extrusions can be purchased in -O temper [Boeing BMS not AMS] and can then be solution HT/Quenched, stretch-formed in the W temper, then PA to -T762 temper [BAC HT Spec?]. V Good mechanical/durability/EXCO/SCC properties!? Alternate for 7075-T6 and 7178-T6 extrusions!!!!???? I wonder if AMS specs [and MMPDS] will ever catch-up with BMS/BAC, this alloy/temper.
Regards, Wil Taylor
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