Give an example of the composition of an age hardenable alum

Give an example of the composition of an age hardenable aluminium-copper alloy.

2000-series aluminum alloys (important examples: 2024 and 2019) 6000-series aluminum alloys (important example: 6061 for bicycle frames and aeronautical structures) 7000-series aluminum alloys (important examples: 7075 and 7475) 17-4 stainless steel Waspaloy Copper Precipitation-Hardened Steels