Originally Posted By: Chuck H
....if you know the "new" wall thickness and the elongation, you can calculate the new strength of the tube.


Is there a good way to determine if the strain value of .2 is approached or exceeded? Also, once the maximum stress is achieved, would additional movement of the metal, bulge or dent repair, move that area farther to the right on the strain curve? Is it better to shoot a bulge as is?