Welding Wps Variables: GMAW
nonessential#QW-402.1 to supplementary essential#QW-403.6
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 | standard | typical range or limits | variable category | variable name | variable type |
|---|---|---|---|---|---|---|---|---|---|---|
| GMAW | nonessential#QW-405.1 | all | QW-405.1 | Addition of positions | no | ASME BPVC Section IX 2023 Table QW-255 | 1G through 6GR; per QW-461 | position | Position change | nonessential |
| GMAW | nonessential#QW-409.8 | all | QW-409.8 | Change in wire feed speed (amperage equivalent) range | no | ASME BPVC Section IX 2023 Table QW-255 | Typical WFS range ±10% qualified range | electrical | Wire feed speed range | nonessential |
| GMAW | nonessential#QW-410.8 | all | QW-410.8 | Change in oscillation parameters (weave vs stringer) | no | ASME BPVC Section IX 2023 Table QW-255 | Stringer vs weave bead; maximum weave width per code | technique | Oscillation change | nonessential |
| GMAW | supplementary essential#QW-403.6 | P-1 through P-5F | QW-403.6 | Change in Group Number within P-Number for toughness | yes | ASME BPVC Section IX 2023 Table QW-255; QW-403.6 | CVN testing triggered by referencing code; Group No. per QW-420 | base metal | Group Number change | supplementary essential |
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