Juvinall shows fatigue graphs for 2024 (p. 272) & 7075 (p. 273) up to 10^9 cycles.

Someone (Juvinall?, Atlas?) notes that 2024 is better under fluctuating stress. Note: ultrasonic startup & decay - considered fluctuating?

Should include hatch_p376__grain_directionality_in_rolled_al7075t6_1c.png?