AWS d1.1 essential variable clarification

[hsemus]

Hi

Can i use a pre-qualified AWS D1.1 WPQ , where the base material is S355 to S355, and now I want to use this qualification to weld S355 to S275 .

IS this allowed in AWS essential variable .

 

[gtaw]

A prequalified WPS must use a base metal that is listed in Table 3.1. If it isn't listed, it ain't a prequalified WPS.

Best regards - Al