>>64251467
>>64249366
>>64248777
>unqualified generalizations
retards.
the seam is however ductile, elastic, brittle and tough the weld material (electrode, wire, filler rod) is after whatever heat treating process (what you actually did to it, at what settings, how much it heated up, how quickly it cooled down, etc) you applied to it.
>strong
what the fuck does "strong" even mean you illiterate monkeys? there are different parameters to measure - hardness, yield strength, ductility and toughness.
>base material
what the fuck is the base material? if you weld S235 with a MIG wire that has a base yield strength of 355MPa, the seam will have a higher yield strength than the surrounding material. but repeat the exercise on S690 and the result is completely different (if you can even get it to fuse)
The yield strength and ultimate tensile stress of steel varies by a literal order of magnitude depending on the alloying and heat treatment it has received. There is a huge variety of filler rods for TIG welding and wires for MIG welding available, with different material properties.