Filler Metals for Training

A training collection typically covers the three most commonly taught arc welding processes: E6010 and E6013 or E7018 stick electrodes for SMAW, ER70S-6 MIG wire (0.030–0.035 in.) for GMAW, and E71T-11 or similar self-shielded flux-cored wire for FCAW-S. Some programs also include ER70S-6 TIG rod (1/16 in. and 3/32 in. diameters) for GTAW. Lincoln's ER70S-6 TIG rods are available in 1/16 in., 3/32 in., 1/8 in., and 5/32 in. diameters.

E6010 is a cellulosic, DC+ (reverse polarity) electrode known for deep penetration and a fast-freezing slag — it is the standard choice for root passes on pipe and structural work. It requires a steady hand and produces more spatter than smoother electrodes. E6013 is a rutile-coated electrode that runs on AC or DC, produces a soft arc, light slag, and a smooth bead — it is much more forgiving for beginners learning bead placement and puddle control. Most training programs start students on E6013 before moving to E6010.

ER70S-6 has higher silicon and manganese content than ER70S-3, which gives it better deoxidizing action — important because training plate is often not perfectly cleaned. It handles minor mill scale and surface rust better, produces fewer porosity problems for students still learning gas coverage and technique, and deposits a smooth, easily managed weld bead. It is classified for 70,000 psi tensile strength and is suitable for most mild steel training exercises.

For MIG (GMAW), 0.030 in. wire on 115V machines or 0.035 in. on 230V machines is the standard starting point for mild steel. For Stick (SMAW), 3/32 in. (2.4 mm) or 1/8 in. (3.2 mm) electrodes are appropriate for students learning on 1/8–3/16 in. steel plate; 1/8 in. E7018 typically runs at 90–135A. For TIG, 1/16 in. (1.6 mm) filler rod is the standard starting diameter for steel at lower amperages. Heavier wire and rod sizes are introduced as students advance to thicker material.

Yes — Lincoln's Innershield NR-211-MP and Outershield 71M flux-cored wires are available on 14 lb four-pack coils (e.g., ED012506, ED012508) that are convenient for training lab use, in addition to the standard 50 lb industrial coils. ER70S-6 MIG wire is available on 2 lb and 10 lb spools suitable for lower-volume training use. Contact your dealer or check individual product listings for available pack sizes.

Training filler metals are the same AWS-classified consumables used in production — there is no special "training grade." The designation refers to the collection's purpose (appropriate for teaching the core processes), not to a lower performance standard. ER70S-6 wire, E7018 electrodes, and E71T-11 flux-cored wire all meet AWS classification requirements and are suitable for production work that falls within their applicable codes and procedures.