Select 721 Mil

Carbon Steel / Flux Cored / Gas Shielded


Features

  • Intended for single and multiple pass welding of carbon steels, such as ASTM A36, A131, and A285
  • Designed for shielding with blends of 75-80% Ar/balance CO₂
  • The higher argon blends offer lower fume generation rates than shielding with carbon dioxide
  • Developed primarily for Naval shipbuilding applications

Standard Diameters

in (mm)
  • 0.045 (1.2)
  • 0.052 (1.3)
  • 1/16 (1.6)

Welding Positions

All Positions

Shielding Gas

  • 75% Ar / 25% CO₂
    Flow Rate: 40 – 50 CFM

Polarity

Direct Current Electrode Positive (DCEP)

Conformances

  • ASME SFA 5.20
    • E71T-12M
    • E71T-1M
    • E71T-9M
  • AWS A5.20
    • E71T-12M
    • E71T-1M
    • E71T-9M
  • AWS A5.36
    • E71T1-M21A2-CS2
    • E71T1-M21P2-CS2
  • MILITARY MIL-DTL-24403/1F
    • MIL-71T-1-HYM
  • TYPICAL WELD DEPOSIT CHEMISTRY (WT%)
    Shielding Gas C Cr Cu Mn Mo Ni P S Si V
    75% Ar/25% CO₂ 0.04 0.06 0.03 1.19 0.00 0.41 0.012 0.007 0.28 0.02
    Typical Mechanical Properties
    Shielding Gas Tensile Strength
    ksi (MPa)
    Yield Strength
    ksi (MPa)
    Elongation
    (%)
    WeldCondition PWHTTemp Charpy V-Notch
    0 °F ft⋅lb (-18 °C J)
    Charpy V-Notch
    -20 °F ft⋅lb (-29 °C J)
    75%Ar / 25%CO2 83 (572) 76 (524) 28 As-Welded 105 (142) 81 (110)
    75%Ar / 25%CO2 83 (572) 71 (490) 30 PWHT 1150°F for 2 hrs

    Packaging (lbs (kg))

    33 (15) Spools, 60 (27.2) Coils, 500 (226.8) Round Drum, 800 (362.9) Hex Drum, 900 (408.2) Hex Drum

    *Some packaging options may not be available depending on diameter and product. Special package options may be available upon request.