[jpence38]

The strength of any weld is largely influenced by its cooling rate. The cooling rate of the stringer bead is much faster and therefore the grains are much smaller than for a weaved weld. However the cooling rate also has an effect on the HAZ which is often the weakest part of the weld. Due to the faster cooling rates of the stringer weld, there is less heat available for the growth of a HAZ, and so the HAZ of the stringer weld is narrower, giving a smaller "weaker" area and a stronger weld.

And there are other mechanical properties to consider. Stringer welds will generally be harder, less ductile and more creep resistant than weaved. I don't know about corrosion resistance or fatigue behaviour.

[jwmacawful]

that's way too deep for me. i'll leave the metallurgy to the engineers.

[kermdawg]

that's way too deep for me. i'll leave the metallurgy to the engineers.

You can do that, but I'll tell ya what man. Every book I've read and every welder I've talked to will tell ya to learn as much metallurgy as you can. The more you know about metallurgy, the better a welder you will make. Some food for thought :)

[jwmacawful]

i'll tell you what and no offense, been welding for almost forty years~ everything from splicing 4" thick "H" beams to welding high pressure steam lines and repairing cast iron, have my 1st. class welding license for over 30 years. have you ever heard the story about teaching old dogs new tricks?

[kermdawg]

hehehe. More than once.

[jwmacawful]

well, there's lots of truth to it. stay safe.

[jwmacawful]

btw, what kind of welding do you do and where do you do it??