K4406 Stick Electrodes AWS Classification E9018-B3 H4R Material Low-Alloy Steel Process Stick Welding (SMAW) Overall Diameter 1/8 in Overall Length 14 in Tensile Strength (Minimum Required) 90 ksi Tensile Strength (As Welded) 102 to 104 ksi (Stress-Relieved 1 hr @ 1275 Degrees F) 94 to 99 ksi (Stress-Relieved 8 hr @ 1275 Degrees F) Yield Strength (Minimum Required) 77 ksi