WELDING PROCEDURE SPECIFICATION (WPS)
Clause 5 — Prequalified — AWS D1.1:2020
WPS Number
WIQ-PQ-GMAW-130
Title
GMAW ER70S-6 (Short-Circuit) — CJP Square-Groove Butt — Group I — ≤3/16 in — All Position
JOINT DESIGN
Code Reference
Figure 5.1 (adapted — requires Clause 6 PQR)
DESIGNATION: Square-Groove (Clause 6)
| DIMENSION | AS DETAILED | AS FIT-UP TOLERANCE | NOTES |
|---|
| Root Opening (R) | 0 to 1/16 in | +1/16 in, −0 | — |
| Root Face (f) | T (full thickness) | — | — |
| Base Metal Thickness (T) | ≤3/16 in | — | Short-circuit: thin material only |
BASE METAL
Specifications
A36 (≤3/4 in), A53 Gr B, A500 Gr B, A500 Gr C, A501 Gr A, A516 Gr 55, A516 Gr 60, A516 Gr 65, A516 Gr 70, A524 Gr I/II, API 5L Gr B, API 5L X42
Thickness Range
1/16 in to 3/16 in
POSITION
Qualified Positions
1G, 2G, 3G, 4G
Vertical Progression
uphill
PREHEAT & INTERPASS TEMPERATURE
Minimum Preheat
32°F (thin material — no preheat typical)
Code Reference
Table 5.8, Category B
APPROVED FILLER METAL SIZES
Welder may use any size listed below. Each size has its own amperage/voltage range and position limit per Table 5.1.
| Size | Class | Amps | Volts | Position Limit | Notes |
|---|
| 0.023 in | ER70S-6 | 40-100 | 15-19 | All | Short-circuit transfer — Clause 6 PQR required |
| 0.030 in | ER70S-6 | 50-130 | 16-20 | All | Short-circuit transfer — Clause 6 PQR required |
| 0.035 in | ER70S-6 | 60-160 | 16-21 | All | Short-circuit transfer — Clause 6 PQR required |
WELDING PARAMETERS
| Pass | Process | Filler / Class | Size | Current | Amps | Volts | Speed | Technique |
|---|
| Single pass | GMAW | ER70S-6 | 0.023 in | DCEP | 40-100 | 15-19 | 10-20 in/min | either |
| Single pass | GMAW | ER70S-6 | 0.030 in | DCEP | 50-130 | 16-20 | 10-20 in/min | either |
| Single pass | GMAW | ER70S-6 | 0.035 in | DCEP | 60-160 | 16-21 | 10-20 in/min | either |
PREQUALIFIED VARIABLE TOLERANCES (TABLE 5.2)
| VARIABLE | TOLERANCE | NOTES |
|---|
| Amperage (Current) | ± 10% | From values specified on WPS |
| Voltage | ± 15% | From values specified on WPS |
| Travel Speed | ± 25% | From values specified on WPS |
| Wire Feed Speed | ± 10% | GMAW, FCAW, SAW only |
TABLE 5.1 ADDITIONAL LIMITS
•Pass width at surface ≥ pass depth (width/depth rule)
•Vertical progression: uphill (except undercut repair with ≥70°F preheat)
•Power source: Constant Voltage (CV) required
FIELD TIPS — WeldIQ
▸GMAW-S (short circuit) is NOT prequalified under D1.1. Only spray and pulse transfer are prequalified.
▸Open root: fit-up is EVERYTHING. Consistent root opening = consistent penetration. Check gap at least every 12 inches.
▸Use bridge tacks or tack from inside when possible. Tacks in the groove must be ground to feather edge before root pass.
▸Verify preheat with a temperature-indicating crayon (Tempilstik) or contact pyrometer. Check 3 inches from the weld on both sides.
CODE CITATIONS
D1.1:2020 Clause 5.5.1 (GMAW-S excluded) · Clause 6 (PQR required) · Table 5.3 Group I · Table 5.4 (ER70S-6/A5.18)
Generated by WeldIQ™ · AWS D1.1:2020 · Prequalified per Clause 5 — Prequalified