SelectAlloy 309LSi-C

Stainless Steel / Metal Cored / Gas Shielded


Features

  • Increased silicon (Si) content compared to standard grades of the same alloy composition improves bead wetting and arc stability.
  • Low carbon (C), < 0.03 wt%, minimizes carbide precipitation (sensitization) which makes the weld metal more resistant to intergranular corrosion.
  • Metal cored benefits include the ability to successfully bridge gaps when part fit up is not as designed, higher travel speeds with subsequent lower heat inputs at equal amperages, and ability to join thin materials.
  • Applications include welding dissimilar metal, such as type 304 SS to mild steel, cladding mild steel or type 304 base metals for corrosion resistance, and welding of the stainless steel side of type 304 claddings.

Standard Diameters

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

Welding Positions

Flat and Horizontal

Shielding Gas

  • Ar + 0.5-3% CO₂
  • Ar + 0.5-3% O₂
    Flow Rate: 40 – 50 CFM

Polarity

Direct Current Electrode Positive (DCEP)

Conformances

  • ASME SFA 5.22
    • EC309LSi
    • EC309Si
  • AWS A5.22
    • EC309LSi
    • EC309Si
  • Approvals
    Agency Approval Shielding Gas Diameter(s)
    in (mm)
    CWB EC309LSi N/A 0.035 (0.9) – 1/16 (1.6)
    TYPICAL WELD DEPOSIT CHEMISTRY (WT%)
    Shielding Gas C Cr Cu Mn Mo Ni P S Si
    98% Ar/2% O₂ 0.03 23.80 0.13 1.39 0.07 12.70 0.023 0.004 0.78

    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.