Can copper be used for fuel line?

The rubber lines in your fuel system are more likely to fail than copper line, ever hear of dry rot? How many have changed out all of the little sections of rubber line in their fuel system, or do you just wait until you spring a leak to realize you should replace that 4 inch piece that attachs the pick up tube in the tank to the line that runs to the engine (there are other short pieces on the vent and carbon canister lines also in few places). How many of you use plastic or those glass see thru fuel filters (hmmm, wonder how they can be considered safer and yes I am well aware that most race sanctioning bodies limit rubber line overall length in the fuel supply system and that they do not allow glass or plastic fuel filters. I am refering to street vehicles in this respect).

Aluminum and steel can work harden and fail just like copper (ever bend a piece of coat hanger back and forth until it breaks or how about picking up some aluminum filler rod and trying the same thing?). Make sure lines are secured properly, to avoid vibration fatigue.

All will corrode due to exposure to elements. If you use either consider painting the lines to help protect them from the elements if it will be street driven.

Soft copper line is more expensive than aluminum line. Would be the main reason I would avoid it, but if I had a roll of soft copper line the correct size anyway and didn't have to spend money to buy aluminum, I certainly wouldn't be afraid of using it as a fuel line.

JMO