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.030" ER 309LSi Harris Products Group Stainless Steel MIG Wire 25 lb Spool

Airgas Part #:HAR309LSE8

Harris Welco

Manufacturer #:309LSE8



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$16.80 /US Pound
Package Size: 25 US pound
$16.80 US Pound
$16.80 US Pound
$420.00 Spool 25 US pound / Spool

Typically in Stock

Item Details

  • 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.


  • 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


  • 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)


  • Welding base metals of similar composition in wrought or cast form, welding type 304 and similar base metals and some dissimilar steels

Product Attributes

AWS Classification

» ER 309LSi


» .030"


» 25 lb

Trade Name

» Harris Products Group


» Spool