This specification covers an aluminum alloy in the form of hand forgings procured to inch/pound dimensions. MAM 4247 is the metric version of this MAM. These forgings have been used typically for parts requiring a combination of high strength and resistance to stress-corrosion cracking and for parts requiring stability during machining, but usage is not limited to such applications.
SAE AMS4247A-1994 history
2018SAE AMS4247C-2018 Aluminum Alloy@ Hand Forgings 7.7Zn - 2.4Mg - 1.6Cu - 0.16Cr (7049-T7352) Solution Heat Treated@ Stress Relieved by Compression@ and Precipitation Heat Treated (UNS A97049)
2011SAE AMS4247B-2011 Aluminum Alloy, Hand Forgings 7.7Zn - 2.4Mg - 1.6Cu - 0.16Cr (7049-T7352) Solution Heat Treated, Stress Relieved by Compression, and Precipitation Heat Treated
2006SAE AMS4247B-2006 Aluminum Alloy, Hand Forgings 7.7Zn 2.4Mg 1.6Cu 0.16Cr (7049-T7352) Solution Heat Treated, Stress Relieved by Compression, and Precipitation Heat Treated
1994SAE AMS4247A-1994 Aluminum Alloy, Hand Forgings 7.7Zn 2.4Mg 1.6Cu 0.16Cr (7049-T7352) Solution Heat Treated, Stress Relieved by Compression, and Precipitation Heat Treated
1992SAE AMS4247-1992 ALUMINUM ALLOY HAND FORGINGS 7.7Zn - 2.4Mg - 1.6Cu - 0.16Cr (7049-T7352) Solution Heat Treated, Stress Relieved by Compression, and Precipitation Heat Treated
1987SAE AMS4247-1987 ALUMINUM ALLOY@ HAND FORGINGS 7.7Zn - 2.4Mg - 1.6Cu - 0.16Cr (7049-T7352) Solution Heat Treated@ Stress Relieved by Compression@ and Precipitation Heat Treated (UNS A97049)