Overview
ER309LSI stainless steel MIG welding wire is a bare, solid wire electrode designed for gas-metal arc welding (GMAW) of stainless steel and dissimilar metal joints. The ProStar PRS05023 combines the low-carbon, high-silicon formula that delivers exceptional bead appearance, arc stability, and corrosion resistance. 0.035″ diameter on a 33 lb spool provides ample material for professional fabrication and repair operations.
Key Features
- High Silicon Content: Produces weld beads that are exceptionally smooth due to good wetting action
- Low Carbon Composition: Low carbon in this alloy minimizes carbide precipitation and makes it more resistant to intergranular corrosion
- Smooth Bead Profile: It flows more easily when melted and fills in more of the space between the two pieces of your weld, and creates smoother welds
- Arc Stability: The higher silicon gives arc stability and exceptionally smooth bead appearance
- 33 lb Spool: The precision winding on the 33 lb spool ensures consistent feeding through your liner and gun, reducing the chance of bird-nesting or burn-backs during long runs
Technical Specifications
- Alloy Composition: Nominal composition of 24% Cr, 13% Ni and 0.8% Si, with a maximum carbon content of 0.03%
- Wire Diameter: 0.035″
- Spool Weight: 33 lb
- Process: GMAW (MIG)
- Tensile Strength: 89,900 psi
- Yield Strength: 60,500 psi
- Elongation: 35%
- Shielding Gas: Works best with Argon/CO2 or Tri-mix shielding gases
Typical Applications
- Food Service & Beverage: Best used in the welding of food service applications and beverage tanks
- Stainless Steel Joining: Used to weld base metals of similar composition in wrought or cast form, and to weld type 304 and similar base metals where severe conditions may exist
- Dissimilar Metal Welding: Occasionally, used to weld dissimilar steels
- Corrosion-Resistant Fabrication: Ideal for applications requiring high corrosion resistance and smooth, aesthetically pleasing weld finish
Compatibility & Replacements
Compatible With
- Standard MIG/GMAW welding equipment
- Wire feeders with stainless steel liners
- Argon, Argon/CO2, and Tri-mix shielding gas systems
- All-position welding applications
Replaces / Drop-In Replacement For
- Generic ER309LSI 0.035″ 33 lb spools from other manufacturers
- ESAB 309LSi wire (Airgas part ESA1651099820)
- Select-Arc 309LSi wire formulations
Works With
- All standard MIG/GMAW power sources rated for stainless steel welding
- Wire drive systems compatible with 0.035″ diameter wire
- Argon-based shielding gas mixtures (Ar + 2% Oâ‚‚ recommended)
- Standard contact tips and liners for stainless steel wire
