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Diameters / Packaging


1/8 in. 0309T60
1/16 in. 0309T30
3/32 in. 0309T50

309 GTAW (TIG)


ER309 Stainless Steel GTAW (TIG) welding alloy


ER309 Stainless steel GTAW (TIG) welding rod is used to weld base metals of similar composition in wrought or cast form. It is also used to weld type 304 and similar base metals where severe conditions may exist. Occasionally, used to weld dissimilar steels.


  • Stainless steel 309 welding rod welds 304 and similar base metals in wrought or cast form where severe corrosion conditions may exist
  • Sometimes welds dissimilar steels
  • 86,000 psi tensile strength (as welded)
  • 57,000 psi yield strength (as welded)
  • 47% elongation; 68% reduction of area (as welded)
  • 85 HRB Rockwell B hardness (as welded)
  • 160 HB Brinell hardness (as welded)
  • 105 ft./lb. @ room temperature Charpy V (as welded)
  • Conforms to ANSI/AWS A5.9 & ASME SFA 5.9 ER 309

Typical Applications

  • General fabrication
  • Joining dissimilar metals

Welding Positions

  • All

Shielding Gas

  • 98% Ar/ 2% O2


Warning -

Cancer and Reproductive Harm -