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309LSi Stainless steel GMAW (MIG) welding alloy has similar usage as 309L, but the 0.65-1.00% silicon content improves wash and wetting behavior in the gas shielded welding processes. Conforms to AWS A5.9.
Features
Welds 304 and similar base metals in wrought or cast form where severe corrosion conditions may exist
Sometimes welds dissimilar steels
Higher 0.65-1.00% silicon content improves the wetting and washing behavior of the weld metal
Specifications
87,000 psi tensile strength (as welded)
58,000 psi yield strength (as welded)
48% elongation 60% reduction of area (as welded)
85 HRB Rockwell B hardness (as welded)
160 HB Brinell hardness (as welded)
95 ft./lb. @ room temperature Charpy V (as welded)
Applications
Welding base metals of similar composition in wrought or cast form, welding type 304 and similar base metals and some dissimilar steels
Caution
All parameters are suggested as basic guidelines and will vary depending on joint design, number of passes and other factors.
