Flux Cored Welding Wire Process Flux-Cored Welding (FCAW) Material Carbon Steel Wire Diameter 0.0625 in Tensile Strength (As Welded) 86 ksi (100 Percent Carbon Dioxide) 84 ksi (Stress-Relieved 1 hr @ 1150 Degrees F) Yield Strength (Minimum Required) 58 ksi Yield Strength (As Welded) 78 ksi (100 Percent Carbon Dioxide) 72 ksi (Stress-Relieved 1 hr @ 1150 Degrees F) Spool Type Fiber Spool Series UltraCore HD-12C Weight 33 lb For Material Type Carbon Steel to Carbon Steel