Select 121-K3M

Low Alloy / Flux Cored / Gas Shielded

Resources

Features

  • Microalloying and slag adjustments provide enhanced CVN toughness values at temperatures of at least -40° F (or °C).
  • Well suited for offshore drilling rigs, low temperature storage tanks, ship building, and high strength and toughness applications.
  • Smooth arc transfer and excellent bead geometry considering the higher alloyed nature of this product.

Standard Diameters

in (mm)
  • 0.045 (1.2)
  • 0.052 (1.3)

Welding Positions

All Positions

Shielding Gas

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

Polarity

Direct Current Electrode Positive (DCEP)

Conformances

  • AWS A5.29
    • E121T1-GM-H4
    • Approvals
    Agency Approval Shielding Gas Diameter(s)
    in (mm)
    ABS E121T1-GM-H4 M21 (75% Ar/25% CO₂) 0.045 (1.2) – 0.052 (1.3)
    TYPICAL WELD DEPOSIT CHEMISTRY (WT%)
    Shielding Gas C Cr Mn Mo Ni P S Si V
    75% Ar/25% CO₂ 0.06 0.06 2.00 0.38 2.50 0.012 0.009 0.37 0.01
    Typical Mechanical Properties
    Shielding Gas Tensile Strength
    ksi (MPa)    		 Yield Strength
    ksi (MPa)    		 Elongation
    (%)    		 WeldCondition PWHTTemp Charpy V-Notch
    -40 °F ft⋅lb (-40 °C J)    		 Charpy V-Notch
    -60 °F ft⋅lb (-51 °C J)
    75%Ar / 25%CO2 130 (897) 119 (821) 18 As-Welded – 37 (50) 26 (35)
    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)
    0.045 (1.2) 75% Ar/25% CO₂ All Positions 200 (5.1) 145 23 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 75% Ar/25% CO₂ All Positions 235 (6.0) 160 24 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 75% Ar/25% CO₂ All Positions 300 (7.6) 185 26 1/2 – 5/8 (13 – 16)
    0.045 (1.2) 75% Ar/25% CO₂ Flat & Horizontal 375 (9.5) 215 27 5/8 – 3/4 (16 – 19)
    0.045 (1.2) 75% Ar/25% CO₂ Flat & Horizontal 440 (11.2) 235 29 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 75% Ar/25% CO₂ All Positions 170 (4.3) 155 23 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 75% Ar/25% CO₂ All Positions 200 (5.1) 175 24 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 75% Ar/25% CO₂ All Positions 250 (6.4) 225 26 5/8 – 3/4 (16 – 19)
    0.052 (1.3) 75% Ar/25% CO₂ Flat & Horizontal 310 (7.9) 250 27 3/4 – 1 (19 – 25)
    0.052 (1.3) 75% Ar/25% CO₂ Flat & Horizontal 395 (10.0) 280 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.