Lincoln Fleetweld 47 is Lincoln Electric's premier E7014 welding rod — a titania iron-powder SMAW electrode built for fast deposition, effortless arc starts, and self-peeling slag on mild carbon steel. Rated to a minimum 72,000 psi tensile strength, Fleetweld 47 satisfies AWS D1.1 prequalified WPS requirements and runs on AC, DCEP, or DCEN, making it a top pick for shops that weld on older transformer machines alongside modern inverter power sources.
Fleetweld 47 is Lincoln Electric's flagship E7014 iron-powder stick electrode. The AWS designation breaks down as follows: "E" = electrode; "70" = 70,000 psi minimum tensile; "1" = all-position; "4" = titania-iron-powder flux covering compatible with AC, DCEP, and DCEN. The iron-powder addition (≈ 30 % by flux weight) drives deposition efficiency higher than a bare titania rod, so Fleetweld 47 lays down metal faster than an E6011 or E6013 at equal amperage. Lincoln's proprietary flux blend produces a smooth fluid pool, fast-freezing slag that peels cleanly, and an attractive bead appearance that often needs no secondary grinding on non-critical joints. The Fleetweld family has been a North American shop standard for decades; the 47 variant sits above Fleetweld 37 (E6013) in tensile strength and deposition rate, and below the low-hydrogen Excalibur 7018 family for hydrogen-critical work.
Because E7014 carries iron powder in the flux coating rather than a cellulosic or basic lime covering, it bridges the gap between beginner-friendly E6013 rods and the more demanding E7018 low-hydrogen family. The result is a rod that any intermediate welder can run smoothly while still meeting AWS structural steel code requirements for most general structural applications.
Fleetweld 47 is classified under AWS A5.1/A5.1M E7014 and also meets Canadian Standard CSA W48 requirements. Key mechanical properties from the weld metal certification data sheet:
| Property | Specification |
|---|---|
| AWS Classification | E7014 |
| Tensile Strength (min.) | 72,000 psi (496 MPa) |
| Yield Strength (min.) | 60,000 psi (414 MPa) |
| Elongation (min.) | 17% |
| Flux Type | Titania / iron-powder |
| Current | AC, DCEP, DCEN |
| Welding Position | All (F, H, V-up, OH) |
| Available Diameters | 3/32, 1/8, 5/32, 3/16 in |
| H-Designation | Not classified (non-low-hydrogen) |
E7014 is not a low-hydrogen electrode; its diffusible hydrogen output can exceed 16 mL/100g, so it is not appropriate for hydrogen-crack-sensitive, thick-section, or highly restrained joints. For those applications use Lincoln Excalibur 7018 MR (E7018-H4R). Fleetweld 47 is approved for AWS D1.1 Table 4.5 prequalified WPS on Category I and II base metals.
The E7014 welding rod profile — higher deposition than E6013, AC-capable, non-low-hydrogen — makes Fleetweld 47 ideal for:
- General shop fabrication on A36, A572, A516 steel — frames, brackets, conveyors, enclosures, and general structural steel under 1 in thick.
- Structural tack welding and fitup passes — the fast-freeze slag lets you tack quickly and reposition assemblies without waiting for cooling.
- Fillet welds on light structural steel (3/16 in – 3/4 in) — self-peeling slag and attractive bead reduce cleanup time on exposed welds.
- Maintenance and repair on carbon steel equipment — tolerates light mill scale and surface contamination better than E7018.
- AC-only job sites — runs stably on older 230 V transformer buzz-boxes and portable AC welders commonly found in field maintenance trailers.
- Training and production welding where E7018 is not code-required — easier to run, faster cleanup, no oven storage requirement.
Do not use Fleetweld 47 for: stainless or dissimilar metal, cast iron, hardfacing, high-yield applications requiring Charpy CVN certification, or pipe root passes where cellulosic penetrators are specified.
Use the following amperage table as a starting point; final settings depend on your specific machine, plate thickness, and joint configuration:
| Electrode Diameter | Amperage Range | Typical Travel Speed |
|---|---|---|
| 3/32 in (2.4 mm) | 70–110 A | 8–12 in/min |
| 1/8 in (3.2 mm) | 100–150 A | 10–14 in/min |
| 5/32 in (4.0 mm) | 130–190 A | 12–18 in/min |
| 3/16 in (4.8 mm) | 175–250 A | 14–20 in/min |
Polarity guidance: AC is the most common choice for Fleetweld 47, especially on transformer machines. DCEP delivers slightly deeper penetration and better fill on thicker plate. DCEN improves deposition efficiency on thinner material where burn-through is a risk.
Position technique:
- Flat/horizontal: Run straight or a slight weave, 5–15° drag angle, 1× core diameter arc length.
- Vertical-up: Reduce amperage 10–15 A below midrange; use a triangular weave or J-weave to let each shelf solidify before advancing. Keep arc length tight.
- Overhead: Use the lower end of the amperage range; short arc; forehand technique with a slight push angle to direct molten metal into the joint.
Common defects and corrections:
- Undercut at toes — reduce amperage 5–10 A or reduce travel speed.
- Porosity — check for moisture, contamination, or excessive arc length; ensure base metal is clean and dry.
- Slag inclusions in multi-pass welds — ensure thorough inter-pass slag removal; use a chipping hammer and wire brush before each new pass.
E7014 is non-low-hydrogen. Unlike E7018, it does not require a 250–300 °F holding oven before use under most circumstances. However, proper storage still matters:
- Sealed containers: Lincoln Fleetweld 47 ships in a sealed metal container that prevents moisture ingress for an indefinite shelf life under normal dry warehouse conditions (below 70 % RH, 40–100 °F).
- Open containers: Once opened, keep the can sealed between uses. In humid climates (above 80 % RH), partial canisters left open overnight may absorb enough moisture to cause minor porosity — a 1-hour dry-out at 250 °F (121 °C) before the next use is sufficient.
- Re-drying: If heavily wetted, dry at 250–300 °F for 1 hour. Never exceed 350 °F — excessive heat degrades the titania-iron-powder covering and can cause coating checks or pop-offs during welding.
- Handle with care: Avoid dropping containers or allowing electrodes to become bent. A bent electrode causes erratic arc movement and uneven deposition.
- Discard damaged electrodes: Any electrode with cracked, chipped, or peeling flux should be discarded before welding to prevent slag inclusions and weld quality issues.
Fleetweld 47 is formulated for mild and low-alloy carbon steels with carbon equivalent (CE) ≤ 0.40. Compatible base materials include:
- ASTM A36 structural steel
- ASTM A572 Grade 42, 50, 60, 65
- ASTM A516 Grade 55, 60, 65, 70 (pressure vessel plate)
- ASTM A588 weathering steel (non-structural, non-atmospheric-exposed)
- SAE 1010, 1018, 1020, 1040 carbon steel
Do not use Fleetweld 47 on stainless steels, cast iron, aluminum, copper alloys, or high-carbon/tool steels. For dissimilar or stainless work, consult Lincoln's filler metal selector.
Joint geometry: Fleetweld 47 excels in fillet, lap, and T-joints in flat and horizontal positions. Butt joints in vertical and overhead are possible with good technique. For groove butt joints requiring full-penetration in high-restraint applications, use a low-hydrogen electrode (E7018) to reduce hydrogen cracking risk. For open-root butt joints on pipe, use a cellulosic E6010 or E6011 for the root pass, then fill and cap with Fleetweld 47 or E7018 as required.
Minimum preheat: For A36 plate up to 3/4 in thick in ambient above 32 °F, no preheat is required per AWS D1.1. For thicker material or higher CE steels, preheat per the applicable fabrication code. Because E7014 is not low-hydrogen, use conservative preheat when in doubt to prevent cold cracking.
Q: What is the difference between E7014 and E7018?
E7014 (Fleetweld 47) uses titania-iron-powder flux; it is compatible with AC, DCEP, and DCEN, and does not require a holding oven before welding. E7018 uses low-hydrogen iron-powder flux, requires DCEP or selected AC machines, and must be kept in a 250–300 °F holding oven once the container is opened. E7018 is specified by code for high-restraint, thick-section, or hydrogen-crack-sensitive joints. For general fabrication where code doesn't mandate low-hydrogen, E7014 is faster and easier.
Q: Can I weld with Fleetweld 47 on an old buzzbox AC welder?
Yes. E7014 was specifically engineered for AC compatibility and will run smoothly on 60 Hz transformer-type machines. Set amperage in the midrange for the rod diameter (e.g., 120–130 A for 1/8 in) and expect easy arc starts and stable operation.
Q: Do I need to dry Fleetweld 47 before welding?
Generally no — take rods directly from the sealed Lincoln container and weld. If the container has been open for days in high humidity, a 1-hour dry-out at 250 °F is a prudent precaution but not a code requirement for E7014.
Q: Is E7014 strong enough for structural steel welding per AWS D1.1?
Yes. AWS D1.1 Table 4.5 lists E7014 as an approved filler for prequalified WPS on Group I and II base metals. It is not approved for Demand Critical welds (DM) or Charpy CVN-required joints without additional qualification.
Q: What diameter Fleetweld 47 should I use for 3/8 in fillet welds?
A 1/8 in or 5/32 in electrode is appropriate for a 3/8 in fillet weld on structural plate. Use 5/32 in at 160–180 A for a single-pass fillet; use 1/8 in at 130 A for better control in tight access situations.
Q: How does Fleetweld 47 compare to Fleetweld 37 (E6013)?
Both are beginner-friendly titania-type rods. Fleetweld 37 (E6013) has a 67,000 psi minimum tensile and is even more tolerant of thin gauge and poor fit-up. Fleetweld 47 (E7014) has a 72,000 psi minimum and higher iron-powder content, making it faster and stronger — better suited where code requires 70 ksi filler metal.
Q: What is the shelf life of Fleetweld 47 in a sealed can?
In the original sealed Lincoln container, stored in a dry area below 70 % RH and between 40–100 °F, Fleetweld 47 has an indefinite shelf life. The hermetically sealed packaging maintains flux condition for years of warehouse storage.
When selecting an E7014 welding rod for your shop or jobsite, the key decision factors are tensile strength grade, current compatibility, and iron-powder content. E7014 delivers 70 ksi class tensile strength — sufficient for most structural carbon steel applications under AWS D1.1. Lincoln Fleetweld 47's iron-powder flux gives it the edge over bare titania rods (E6013) in deposition rate, while its AC compatibility makes it usable on older machines that won't run E7018 reliably. For any application requiring low hydrogen (H-designated) weld metal, upgrade to Lincoln Excalibur 7018 or IronArc 7018. For any application where only AC power is available and E7014 tensile class is sufficient, Fleetweld 47 is the optimal choice. The E7014 classification falls squarely in the "middle tier" of structural SMAW electrodes — above E6013, below E7018 — making it the practical everyday rod for general fabrication shops that need code-compliant carbon steel joints without the oven-storage requirements of low-hydrogen filler metals.
Weld quality indicators for E7014: bead profile is flat to slightly convex; width-to-depth ratio approximately 2.5:1; fusion line should be smooth with no undercut at plate-weld interface; slag releases cleanly as one piece leaving a bright, spatter-free surface in flat and horizontal positions. Root face examination after single-pass fillet on 3/16 in plate should show full fusion to both plate surfaces with a minimum 3/32 in throat dimension for a 1/8 in nominal fillet weld.