In article ,
says...
--OK here's the thing: I can get 8 gauge aluminum ground wire
in coils that are pretty tightly wound; i.e. about 8" dia. What I
*need* are dead straight pieces, maybe 10 to 12ft long. I'm thinking if
I could clamp one end in a bench vise and yank the other end hard
enough I could take the metal past the ...what's the correct term,
elastic limit?, then I could straighten out the waves, kinks, etc, yes?

My SWAG = .013 in^2 x 10000 to 15000 psi = 130 to 200
pounds tension to straighten the wire.

Ned Simmons