I'm looking for a starting point for developing welding procedures for welding 2 1/8" thick SA533-A Class 2 steel. This is classified as a P3 material group by ASME Sec IX but I find limited info/help from ASME Sec II-C in determining the correct wire/gas/flux for SAW this material. SFA 5.23 seems to recommend that a wire-flux to meet AWS F90A0-EF1-F1H2. There is no recommendation for SMAW, FCAW or GMAW filler/gas for this alloy. Is there any who has experience/knowledge they can share concerning welding this steel?

Dhul