This document outlines a 4-step process for selecting the appropriate welding process for a given application: 1. Characterize the joint requirements in terms of fast fill, fast freeze, fast follow, and penetration needs. 2. Match these requirements to suitable welding processes and create a checklist of additional considerations. 3. Evaluate factors on the checklist such as production volume, operator skill, equipment costs to eliminate unsuitable processes. 4. Review the application with welding experts and confirm or modify the checklist to select the optimal process.