I don't think so. I have seen that stuff used. Maybe better than actually welding one though. But, it was high strength alloy in the first place and failed. I would think anything less would also fail. But, its not like the gun would blow up, but the barrel might go down range.

I don't mind welding heavier normal aluminums over about 1/8" thick , I have a spoolgun and a tig torch, but small sections require a good high freq unit, a foot petal to control the torch and a cooling unit for the torch. ($$$$) and I am not that good with a tig torch, 2 hands and a foot at the same time, old dog new tricks etc. I do know some guys that are fantastic and have certs to weld most alloys to codes.

But, some stuff just will not weld well.