309 Bare Wire Stainless Steel Alloy, 0.045" Diameter, 500 lb. Premier Packs, ER309LSi per AWS A5.9

Arcos 309 is commonly used for welding similar alloys in wrought or cast form and for welding dissimilar metals Arcos 309LSi features a higher silicon content which delivers smooth bead appearance and good wetting action This wire offers good resistance to general corrosion and intergranular corrosionApplications: Arcos 309LSi is designed for general purpose GMAW and GTAW welding It is also suitable for surfacing lower alloyed steels and for joining clad steels and dissimilar joints 309LSi provides a smooth fillet profile for many applications, such as beverage tanks and food service applicationsShielding Gases: GMAW - 95-98% Ar/2-5% O2, 97-98% Ar/2-3% CO2, 90% He/7-8% Ar/2-3% CO2 for short circuit transfer only GTAW - 100%Ar or Ar/25- 75%He