Welding Stainless Steel Using Mig. If you can use the welder correctly it will give you a solid joint between two pieces of stainless steel. Why is MIG Welding Right for Stainless Steel.
For stainless steel metal the recommended shielding gas mixture is a combination of helium 90 argon 75 and carbon dioxide 25. Stainless steel MIG welding the fastest method. The main reason being it contains higher percentages of chromium as compared to other metals.
When MIG welding on stainless you usually have three choices of transfer depending on your equipment.
Merges your base metal with your stainless steel filler wire. And that means it stays shiny wont rust go brittle and you wont have your weld fail. There are 2 common grades of stainless. TIG welding gas tungsten arc welding slow but mostly used method.