Drawing and annealing of aluminum alloys

I have minimal experience with drawing aluminum but I once worked for a company that also made coilers and had one at a major aluminum processor in upper NY. This I learned: The higher the tensile strength of the aluminum alloy the greater the horsepower required to draw it. This company had a huge rod break down machine and will drawing the softer aluminum alloys could reach speeds of 5-7,000 fpm however with the higher tensile alloys operating the 800HP! motor at 110% electricity they could only get up to about 1,200-1,500 fpm! They were running about 7 awg and lubrication was critical as die wear was much worse than with the lower tensile alloys.