Materials
Best welding process for stainless steel?
Quick answer
The best process for stainless steel is TIG for quality, MIG with tri-mix or 98/2 argon-CO2 for speed — chosen for how the metal conducts heat and what contamination costs you.
Why
Low thermal conductivity but retains heat: lower amps (~10% under mild steel), faster travel, or it sugars and distorts
Runner-up options
Process choice is really about the job: thickness, position, cosmetics and what machine you already own. The above is the default quality answer; adjust for production speed (MIG) or site conditions (stick/flux-core) as needed.