AMS4149F Aluminum Alloy, Die and Hand Forgings 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7175-T74) Solution and Precipitation Heat Treated

AMS4149F results from a Five-Year Review and update of this specification with changes to prohibit unauthorized exceptions (see 3.3.5, 3.6, 4.4.1.1, and 8.5), reorder elements to reflect standard presentation of Composition (see Table 1), relocate Definitions (see 2.4), remove obsolete weight criteria from Ultrasonic Testing (see 3.4.3.1 and 3.4.3.2), update Applicable Documents (see Section 2), Stress Corrosion Resistance Indicator Test (see 3.3.2.2 and 3.3.2.3), Hardness (see 8.2), and Ordering Information (see 8.6), and allow the use of the immediate prior specification revision (see 8.4).