I am sure any of the electrodes listed would do just fine. What is more important for vibration is the care you take finishing off your welds. You have to make absolutely sure there is no undercut along the edge of your welds and that all craters are filled. Any notches or sharp edges at joints will cause a stress concentration. That little notch or crater will be the start of a fatigue crack. There is little difference in ductility etc at conventional temperatures. If you were building a trike that was running in the dead of Winter I would go with E 7018 because it has a better impact value at low temperatures. There are Charpy impact values for each rod on the electrode container. Randy
Is 6013, 6011/6011, 7014, or 7018 the best electrode to withstand bumps and vibration?
I would like both a qualitative and a quantitative response.
Ductility, toughness, or whatever.
Also, what experience have you on the subject?