One of the benefits of CD stud welding is that you can weld to thin materials with no pronounced distortion, burn-through or reverse side discoloration. In order to determine the best combination of stud weld base size and base metal thickness, you can use these charts as a guide. These charts are based on optimum laboratory conditions. Even under optimum conditions, it is difficult to determine the precise point at which reverse-side marking will appear.
Excellent=No marking, excellent weld.
Acceptable=Visible markings, excellent weld.
Unacceptable=Unacceptable marking, base metal failure.