Nope.
The steel in the weld would be as hard as it possibly could be, having cooled from molten and not being tempered. So you end up with a relatively soft item (the FFBM) being pounded between the hammer and the weld. It was only a matter of time until the FFBM gave out.
I believe gave out on the second pipe cut which was the same one the S6 gave out on. Interesting INFI is tough stuff. I wounder how the DF will compair.
