Filler metal change
Filler metal change
(OP)
Good afternoon
PQR- FILLER METAL 308L GMAW P8-P8 ( 304 TO 304)
WPS - FILER METAL 308L - ( 304L-304L)
NOW I would like to weld 316 si i am going to use FILLER WIRE 316L
DO I have to make new wps for 316l OR still can i use 308l filler wire wps.
please advice
PQR- FILLER METAL 308L GMAW P8-P8 ( 304 TO 304)
WPS - FILER METAL 308L - ( 304L-304L)
NOW I would like to weld 316 si i am going to use FILLER WIRE 316L
DO I have to make new wps for 316l OR still can i use 308l filler wire wps.
please advice





RE: Filler metal change
RE: Filler metal change
RE: Filler metal change
RE: Filler metal change
Agree with metengr re: both same F No. and also weldstan re: impact testing but one of the main reasons we have WPS's is to provide guidance to the welders / welding operators.
If 316 is fine being welded mistakenly with 308 then I see no problem with using the same WPS.
If however there is an issue with 316 being welded mistakenly with 308 then I think the WPS should be revised.
QG 101 requires specific essential and non-essential variables (QW 404.33) to be recorded.
Defining specific is the question.
Regards,
Shane
RE: Filler metal change
RE: Filler metal change
Many welders do not have a clue what the specific base material is - 316,304,321 etc - to them it is just stainless steel and it is welded with the same technique and generally the same parameters.
Filler metal is generally the only difference and if you give a welder a WPS with 308 filler metal there is a strong possibility that is what he will use.