Flux Cored Welding Wire Process Flux-Cored Welding (FCAW) Material Carbon Steel Wire Diameter 0.0625 in Tensile Strength (As Welded) 87 ksi (75 Percent Argon/25 Percent Carbon Dioxide) 86 ksi (Stress-Relieved 1 hr @ 1150 Degrees F) Yield Strength (Minimum Required) 58 ksi Yield Strength (As Welded) 78 ksi (75 Percent Argon/25 Percent Carbon Dioxide) 73 ksi (Stress-Relieved 1 hr @ 1150 Degrees F) Spool Type Fiber Spool Series UltraCore HD-12M Weight 33 lb