Lincoln Electric ED031124, Wire Welding 1/16" x 25Lb Plastic Spool. Lincore® 50 Flux-Cored (FCAW-S) ideal for low carbon, medium carbon, low alloy, manganese and stainless steels delivers an abrasion resistant, even under conditions of moderate impact deposit with a Rockwell Hardness range of 34-56 (HRC) limited to deposit of four layers.