AWS A5.9 ER309LSi Premium Stainless Steel Mig Wire 5kg Duralloy 309LSi type solid MAG welding wire, supplied is precision layer wound, depositing a low 23 12 L Si weld metal. Suitable for use with Ar + C02 mixed shielding gases. Duralloy 309LSi is suitable for joining stainless chromium-nickel steels and dissimilar metals in a range of applications including overlays and other dissimilar ferrous metals and stainless steel to mild steel applications. The silicon contents will improves the wetting and washing behavior of the weld metal. Duralloy 309LSi has a good general corrosion resistance Precision layer winding technologies ensure smooth, trouble-free feeding. Current Conditions: DC (+) Shielding Gas: Ar+2%C02 or Ar+5%C02 Argon/helium could also be used to prevent oxidation of the weld metal.