Select 720A

Carbon Steel / Flux Cored / Gas Shielded

Resources

Features

  • Designed for single and multiple pass welding of carbon steels, such as ASTM A36, A285, and A515-Gr 70
  • Can be used with either 100% CO₂ or 75-80% Ar/balance CO₂
  • Improved arc stability at lower amperage/voltage settings allows for welding on thinner sections
  • Intended for welding structural steel and general fabrication, especially on thinner gauges, down to 3/16 inch.
  • Typical applications are railcar construction, pipe welding, and offshore platform construction

Standard Diameters

in (mm)
  • 0.035 (0.9)
  • 0.045 (1.2)
  • 0.052 (1.3)
  • 1/16 (1.6)

Welding Positions

All Positions

Shielding

  • 75-80%Ar/Balance CO₂
  • 100% CO₂
    Flow Rate: 40 – 50 CFM

Polarity

Direct Current Electrode Positive (DCEP)

Conformances

  • ASME SFA 5.20
    • E71T-1C
    • E71T-1M
    • E71T-9C
    • E71T-9M
  • AWS A5.20
    • E71T-1C
    • E71T-1M
    • E71T-9C
    • E71T-9M
    • TYPICAL WELD DEPOSIT CHEMISTRY (WT%)
    Shielding Gas C Cr Cu Mn Mo Ni P S Si V
    100% CO₂ 0.05 0.06 0.03 1.21 0.00 0.02 0.008 0.010 0.38 0.02
    75% Ar/25% CO₂ 0.05 0.05 0.03 1.37 0.00 0.02 0.008 0.009 0.42 0.02
    Typical Mechanical Properties
    Shielding Gas Tensile Strength
    ksi (MPa)    		 Yield Strength
    ksi (MPa)    		 Elongation
    (%)    		 WeldCondition PWHTTemp Charpy V-Notch
    -20 °F ft⋅lb (-29 °C J)
    100%CO2 83 (572) 75 (517) 28 As-Welded – 58 (79)
    75%Ar / 25%CO2 87 (600) 78 (538) 27 As-Welded – 59 (80)
    Recomended Welding Parameters
    Diameter
    in (mm)    		 Shielding Gas Position Wire Feed Speed
    in/min (m/min)    		 Amps Volts Contact Tip to Work Distance
    in (mm)
    0.035 (0.9) 100% CO₂ All Positions 275 (7.0) 120 23 1/2 – 5/8 (13 – 16)
    0.035 (0.9) 100% CO₂ All Positions 320 (8.1) 135 24 1/2 – 5/8 (13 – 16)
    0.035 (0.9) 100% CO₂ All Positions 420 (10.7) 160 26 1/2 – 5/8 (13 – 16)
    0.035 (0.9) 100% CO₂ Flat & Horizontal 465 (11.8) 180 27 5/8 – 3/4 (16 – 19)
    0.035 (0.9) 100% CO₂ Flat & Horizontal 570 (14.5) 200 29 5/8 – 3/4 (16 – 19)
    0.045 (1.2) 100% CO₂ All Positions 200 (5.1) 145 23 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 100% CO₂ All Positions 235 (6.0) 160 24 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 100% CO₂ All Positions 300 (7.6) 185 26 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 100% CO₂ Flat & Horizontal 375 (9.5) 215 27 5/8 – 3/4 (16 – 19)
    0.045 (1.2) 100% CO₂ Flat & Horizontal 440 (11.2) 235 29 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 100% CO₂ All Positions 170 (4.3) 155 23 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 100% CO₂ All Positions 200 (5.1) 175 24 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 100% CO₂ All Positions 250 (6.4) 225 26 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 100% CO₂ Flat & Horizontal 310 (7.9) 250 27 3/4 – 1 (19 – 25)
    0.052 (1.3) 100% CO₂ Flat & Horizontal 395 (10.0) 280 29 3/4 – 1 (19 – 25)
    1/16 (1.6) 100% CO₂ All Positions 125 (3.2) 165 23 5/8 – 3/4 (16 – 19)
    1/16 (1.6) 100% CO₂ All Positions 150 (3.8) 195 24 5/8 – 3/4 (16 – 19)
    1/16 (1.6) 100% CO₂ All Positions 185 (4.7) 225 26 5/8 – 3/4 (16 – 19)
    1/16 (1.6) 100% CO₂ All Positions 265 (6.7) 280 27 3/4 – 1 (19 – 25)
    1/16 (1.6) 100% CO₂ All Positions 325 (8.3) 320 29 3/4 – 1 (19 – 25)

    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.