I recently took over as QA Mgr for my company and have been reviewing our spot welding procedures. We have tables giving minimum tensile strength numbers for the various thicknesses of aluminum, low carbon steel and pre-galvanized steel in. I've been able to locate the minimums for steel in C1.1, but cannot find anything on Aluminum. The former QA mgr has passed away, so I'm stuck at this point.

Any ideas/suggestions would really be appreciated.

Marv