WELDING PROCEDURE SPECIFICATION (WPS)
Clause 5 — Prequalified — AWS D1.1:2020
WPS Number
WIQ-SMAW-7018-G1G2-002
Title
SMAW E7018 — Fillet Weld — Group I to II — All Position
JOINT DESIGN
Code Reference
Figure 5.3 / Table 7.7
DESIGNATION: Fillet — T/Lap/Corner
| DIMENSION | AS DETAILED | AS FIT-UP TOLERANCE | NOTES |
|---|
| Fillet Size (min per Table 7.7) | Per thicker part | −0 | — |
| T ≤ 1/4 in | 1/8 in min | −0 | — |
| T = 1/4 to 1/2 in | 3/16 in min | −0 | — |
| T = 1/2 to 3/4 in | 1/4 in min | −0 | — |
| T > 3/4 in | 5/16 in min | −0 | — |
| Root Opening (gap) | 0 | max 3/16 in | If >1/16 in, increase leg by gap |
| Dihedral Angle (Ψ) | 90° | 60° to 135° | — |
BASE METAL
Specifications
A36 (≤3/4 in), A53 Gr B, A500 Gr B, A500 Gr C, → to →, A36 (all thk), A53 Gr B, A500 Gr B/C, A501, A516 Gr 65/70, A529 Gr 50/55
Thickness Range
1/8 in to unlimited
POSITION
Qualified Positions
1F, 2F, 3F, 4F
Vertical Progression
uphill
PREHEAT & INTERPASS TEMPERATURE
Minimum Preheat
32°F (≤3/4 in) / 50°F (>3/4–1-1/2 in) / 150°F (>1-1/2–2-1/2 in) / 300°F (>2-1/2 in)
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 |
|---|
| 3/32 in | E7018 | 70-110 | 19-22 | All | Any pass |
| 1/8 in | E7018 | 110-160 | 20-24 | All | Any pass |
| 5/32 in | E7018 | 140-200 | 22-26 | All | Any pass |
| 3/16 in | E7018 | 175-250 | 22-28 | V/OH max — Table 5.1 | Any pass |
| 7/32 in | E7018 | 210-300 | 23-28 | F/H only | Any pass |
| 1/4 in | E7018 | 250-350 | 24-30 | F/H only | Any pass |
| 5/16 in | E7018 | 300-400 | 25-32 | F/H fillet max (Table 5.1) | Any pass |
WELDING PARAMETERS
| Pass | Process | Filler / Class | Size | Current | Amps | Volts | Speed | Technique |
|---|
| Single/Root | SMAW | E7018 | 3/32 in | DCEP | 70-110 | 19-22 | 3-7 in/min | either / uphill |
| Single/Root | SMAW | E7018 | 1/8 in | DCEP | 110-160 | 20-24 | 4-8 in/min | either / uphill |
| Single/Root | SMAW | E7018 | 5/32 in | DCEP | 140-200 | 22-26 | 5-10 in/min | either / uphill |
| Fill | SMAW | E7018 | 3/32 in | DCEP | 70-110 | 19-22 | 3-7 in/min | either / uphill |
| Fill | SMAW | E7018 | 1/8 in | DCEP | 110-160 | 20-24 | 4-8 in/min | either / uphill |
| Fill | SMAW | E7018 | 5/32 in | DCEP | 140-200 | 22-26 | 5-10 in/min | either / uphill |
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 |
TABLE 5.1 ADDITIONAL LIMITS
•SMAW max electrode: 1/4 in (groove F/H), 5/16 in (fillet F/H), 5/32 in (V/OH)
•Pass width at surface ≥ pass depth (width/depth rule)
•Vertical progression: uphill (except undercut repair with ≥70°F preheat)
TECHNIQUE
Cleaning
Wire brush/grind. Remove all slag.
FIELD TIPS — WeldIQ
▸Keep electrodes in a hot rod oven (250-300°F) until use. Low-hydrogen rods exposed >4 hours must be re-baked per manufacturer spec.
▸E7018: drag technique (slight push angle). Keep a tight arc — long arc = porosity and lost low-hydrogen protection.
▸Aim at the root of the joint (corner). Most common fillet defect is incomplete fusion at the root due to wrong gun angle.
▸For multipass fillets: first pass tight into root (45°), subsequent passes stacked with slight overlap. Each pass fuses both legs.
▸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 5.2 · Table 5.3 Groups I & II · Table 5.4 · Figure 5.3 · Table 7.7
Generated by WeldIQ™ · AWS D1.1:2020 · Prequalified per Clause 5 — Prequalified