PART 3: FILLER METAL VARIABLES
Filler metal variable is very sensitive item in WPS those mainly affect to the weldment mechanical and properties. Ideally, all the variables have to be kept as the same with PQR.
There’re still some flexible gap, however, the below experienced lesson learns may help to resolve the common problems with WPS those relating to the changes of Filler metal variables.
* ASME IX QW 404.12 vs 404.33 – AWS specification changed.
* AWS D1.1 THE ABILITY TO RESOLVE ABOVE PROBLEMS IS LESS POSSIBLE (WE CAN CHANGE THE BRAND NAME OR REDUCE FILLER STRENGTH 70XX –> 60XX IN SOME CASE). AS ADVICE, THE FILLER HAVE TO BE USED EXACTLY AS SAME AS WPS MENTIONS.