MIL-PRF-85704 §4.4.4 Cleaning Efficiency Test Panel

Aluminum test panels used in MIL-PRF-85704 §4.4.4 (Cleaning Efficiency Test). Each panel is made from 2024-T3 bare aluminum and has an as-rolled surface finish. The panel is 6" in diameter and 0.020" thick and has a 3.75" circular scribe line centered on the panel.