Welding Wps Variables: PAW
ASME BPVC Section IX and AWS D1.1 welding procedure specification (WPS) essential, supplementary essential, and nonessential variables for 8 processes (SMAW, GMAW, GTAW, FCAW, SAW, ESW, EGW, PAW) with QW variable numbers, requalification requirements, and P-number applicability
| welding process | variable key | P number applicability | QW variable number | description | requalification required | typical range or limits | variable category | variable name | variable type |
|---|---|---|---|---|---|---|---|---|---|
| PAW | essential#QW-403.8 | all | QW-403.8 | Change in base metal thickness outside qualified range | yes | Per QW-451; PAW can qualify thinner ranges than GTAW | base_metal | Thickness range | essential |
| PAW | essential#QW-404.4 | all | QW-404.4 | Change in F-Number of filler wire | yes | Same filler wire classes as GTAW; F-6 common | filler_metal | F-Number change | essential |
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