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CLASSIFICATIONS: E71T-1C, E71T-1M, E71T-9C, E71T-9M per AWS A5.20, ASME SFA 5.20

APPROVALS: ABS 3YSA (
CO2/C25), DNV 3 YMS (CO2)

Select 727 was developed to provide improved deposition rates and enhanced welder appeal, compared to conventional electrodes. This electrode is intended for single and multiple pass welding of carbon steels and is designed for use with 100 percent carbon dioxide and 75-80 percent argon/balance carbon dioxide.

APPLICATIONS: The combination of strength and toughness make Select 727 ideal for welding carbon steels requiring a minimum tensile strength of 70,000 psi. Select 727 is superb for such applications as structural steel, farm machinery, construction equipment, railcar fabrication and shipbuilding, where the following steels may be employed: ASTM A131, A285, A515 Gr 70 and A516 Gr 70.

DIAMETERS: .035", .045", .052", 1/16"

SHIELDING GAS: 100% CO2 and 75-80% Ar/balance CO2, 35-50 cfh

WELDING POSITIONS: All positions

CHARACTERISTICS:

  • Fast freezing slag facilitates all position capability.
  • Superior bead geometry to conventional E71T-1C electrodes.
  • Reduced fume emissions and spatter level.

    TYPICAL MECHANICAL PROPERTIES
     
    CO2
    75% Ar/ 25% CO2
    Ultimate Tensile Strength (psi) 89,100 90,600
    Yield Strength (psi) 78,100 82,700
    Percent Elongation 26 25
    CVN (ftlb f) @ 0° F 85 70
                      @ -20° F 70 45

    TYPICAL DEPOSIT COMPOSITION
    Wt% C Mn P S Si
    CO2
    .05 1.39 .008 .010 .56
    75 Ar/25 CO2
    .05 1.61 .005 .010 .64

    TYPICAL WELDING PARAMETERS - CO2 *
      Optimum Range
    Diam. Position Amps Volts WFS Amps Volts
    1/16" Flat 350 29 300 150-400 22-34
      Overhead 225 26 160 150-310 22-28
      Vertical up 225 25 160 150-280 22-27
    .052" Flat 300 28 360 100-330 19-32
      Overhead 225 26 245 150-310 21-28
      Vertical up 225 25 245 150-280 21-27
    .045" Flat 250 28 410 100-300 21-32
      Overhead 200 26 265 150-280 21-29
      Vertical up 200 25 265 100-230 21-28
    .035" Flat 175 26 511 100-250 21-30
      Overhead 150 24 490 100-175 21-26
      Vertical up 150 24 490 100-175 21-26

    * For 75Ar/25CO2 shielding gas lower the voltage by 1 to 1.5 volts.
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