Are Aluminum conductors required to be re-torqued at greater intervals than CU due to the increased thermal expansion? What about AL buss in equipment?

From Eaton's perspective as an electrical equipment manufacturer, They have to build everything to the UL standard. So I dont see a down side to using AL bussed equipment in lieu of CU bussed unless the maintenance required is greater.

If there is no additional maintenance required, and the physical size of the equipment doesn't change due to the larger pieces of AL, I dont see a down side.