You could, but the life is much shorter. The new green colored, brake lines are plated with a rust resistant coating that works real well. You can get them in various lengths up to approx 5 foot lengths, and get connectors to make longer runs, or get a 25 foot roll, and make your own double flares.Question . Will 3000 PSI hydraulic hose replace steel lines on a vehicle brake system or is this a bad idea ? I'm going to be starting some work on an old K5 Blazer which needs some new lines .
Might check with your state before using copper alloys. I know many states used to not allow copper lines,(not sure how it applied to copper alloys), Pa was one. Looking now, they just say "brake lines shall be approved for use as brake lines". I did not research back to the laws, to see if and how they have changed.RE: Brake lines:
Were it me (and it has been often working with British cars) I'd use cupronickel. Not hellishly expensive but it bends, mounts and flares easier than steel - and seals well also. It's available in coils, and cutting and fitting it is a triviality if you follow the routing of the original lines.
Depends on your intent - if this is fixing up a throwaway go with the steel - if not cupronickel's my choice. I have lines on my old Land-Rover I did 20-odd years ago that still look new.