What is the AWS classification of the Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586?

SAW wire AWS classification (e.g., EH14 for high-manganese wire, EM12K for medium-manganese wire, EA2 for low-alloy wire) specifies the wire chemistry. The wire classification must be paired with a compatible flux classification that together meet the WPS deposit property requirements. Check the flux manufacturer's compatibility chart before combining wire and flux.

Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586

Q: What process is the Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586 designed for?

The Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586 is used in Submerged Arc Welding (SAW), a high-deposition welding process where the arc is shielded by a blanket of granular flux rather than shielding gas. SAW is used primarily in the flat and horizontal positions for welding structural plate, pressure vessels, pipelines, ship hulls, and heavy fabrication. It produces deep penetration, high deposition rates, and excellent weld quality with minimal spatter.

Q: What diameter is the Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586 available in?

Common SAW wire diameters range from 5/64 in to 7/32 in. Smaller diameter wire (5/64, 3/32 in) suits lower heat-input applications, tight-groove work, and thinner plate. Larger diameter wire (5/32, 3/16, 7/32 in) maximizes deposition rate for heavy plate and multi-pass structural welds. Consult the wire manufacturer's parameter chart for amperage, voltage, and travel speed by diameter.

Q: What spool or coil size is the Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586 available in?

The Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586 is available in 50 lb coil/spool sizes. SAW wire is commonly supplied as coils or on large spools (300–600 lb) for automated welding systems. Smaller coils (25–50 lb) suit semi-automatic and lower-volume applications. Use of the correct spool hub adapter for your SAW head is required for large-coil operation.

Q: How should I store the Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586 to maintain weld quality?

Store SAW wire in a clean, dry environment. Surface rust on SAW wire can introduce hydrogen into the weld deposit, increasing the risk of porosity and cold cracking in susceptible base materials. Lightly rusted wire can sometimes be cleaned with a dry cloth, but wire with heavy surface oxidation should be discarded. Keep wire coils sealed in their original packaging until ready for use and store at controlled room temperature with low humidity.

SKU: ED019586

$128.15 ~~$136.50~~

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Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586 features fast-freezing slag for easy removal and minimized spilling on circumferential welds. Ideal for three-pass welding with excellent bead shape, moisture resistance, and superior slag removal.

Overview

Lincoln Electric Lincolnweld® 780 Submerged Arc Welding Flux 50lb Bag - ED019586

The Lincoln Electric Lincolnweld® 780 - ED019586 is an industry-standard submerged arc welding (SAW) flux known for its reliability and superior performance across various applications. This flux features a fast-freezing slag for easy removal and reduced spilling, particularly on circumferential welds, ensuring clean and efficient welds. When paired with Lincolnweld® L-61 wire, it is recommended for up to three-pass welding applications. With excellent bead shape, superior slag removal, and strong resistance to moisture contamination, this flux reduces porosity and delivers consistent, high-quality results in demanding environments.

Industry-standard flux for submerged arc welding (SAW) applications
Fast-freezing slag for easy removal and minimized spilling on circumferential welds
Recommended for up to three-pass welding when used with Lincolnweld® L-61 wire
Produces excellent bead shape and superior slag removal
Strong moisture resistance for reduced porosity and improved weld quality
50lb bag for convenient handling and high-volume welding projects

Specifications

Feature	Value
Wire	ClassificationPostweld Heat TreatmentYield Strength @ 0.2% Offset, MPa (ksi)Tensile Strength, MPa (ksi)Elongation, %Charpy V-Notch, J (ft-lbs) @ -20°C (0°F)Charpy V-Notch, J (ft-lbs) @ -30°C (-20°F)
Lincolnweld® L-50®	F7A0-EM13K-H8As-welded520 (75)600 (87)28107 (79)
Lincolnweld® L-60	F7A0-EL12-H8As-welded440 (64)540 (79)3076 (56)
Lincolnweld® L-61®	F7A2-EM12K-H8As-welded480 (70)580 (84)2769 (51)
Wire	Classification%C%Cu%Mn%P%S%SiDiffusible Hydrogen, mL/100g Weld Metal
Lincolnweld® L-50®	F7A0-EM13K-H80.050.111.760.0170.0080.775
Lincolnweld® L-60	F7A0-EL12-H80.060.071.590.0240.0100.654
Lincolnweld® L-61®	F7A2-EM12K-H80.050.081.550.0190.0090.704
Classification	%Al2O3%CaF2%CaO%MgO%MnO%Na2O%SiO2%TiO2%Metal Alloys%ZrO2
Typical Result	39110316215850
LECO Diameter	Flux
LECO Package	50 lb Bag

Includes

(1) 50 lb Bag

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