Solid MIG Wire
The most Popular variety of MIG wire for welding mild steel are ER70S-3 and ER70S-6. Other Common types includes Aluminium and Stainless Steel.
SMAW or better Known as Arc welding uses Electrode consumables in the welding process. There are various types of electrodes , from Mildsteel , Stainless Steel , Aluminium to Cast Iron , each individual electrodes comes with it's own classifications.
GTAW Filler Rods
Tig Filler or Filler Metals are sometimes used side by side during GTAW Welding Process. The most common ones that we can see out there are 308L, 309L or 316L.