Lincoln Electric UltraCore 81Ni ED034415 Flux-Core Wire 0.052" – 33 lb L-75 The 16 lb steel spool

The 16 lb steel spool (ED028385) is best for production welding with spool guns or push-pull systems

Smooth bead appearance

No for most machines — the 2-inch arbor hole fits standard 2-inch spools directly

Brass-plated steel dual scale easy-to-read gauges (psi/kPa)

See the parent grade page for full diameter-to-amperage guidance

Lincoln Electric UltraCore 81Ni ED034415 Flux-Core Wire 0.052" – 33 lb L-75 The 16 lb steel spoolUltraCore 81Ni1C H 0. 052 inch welding wire is designed for high strength, low alloy applications using 100% CO2. These electrodes exhibit robust impact properties, even with a notch offset of 2. 5 mm from weld centerline, as well as superior crack resistance, due to low diffusible hydrogen levels (4mL 100 grams of weld deposit max). Features Capable of producing weld deposits with impact toughness exceeding 88 123 J (65 91 ftlbf) at 40C ( 40F)