Can anyone suggest a filler wire for 4130. It will be pwht. Welds will be single bevel groove, double bevel grove (not complete penetration) and fillet. Weld sizes are only 3/16 grove and fillet.
I was planning on GTAW for the single bevel groove and GMAW or FCAW for the fillets.
Code is D1.1, will I have to do a PQR or is it prequalified? Can I do a combo test using GTAW for the root and some fill passes before filling and capping with GMAW/FCAW?
Thanks in advance- Ted